If you have never taken a garment to a tailor before, the whole process can feel unfamiliar. You know something about the clothes does not fit right, but you are not sure how to describe it, what the tailor will do, or what is and is not possible to change. This guide answers all of those questions from the very beginning.
At Stitch in Time in Sale, Greater Manchester, we work with customers at every level of knowledge about alterations, from people who have been using tailors for years to those walking through the door for the very first time. Our clothing alteration service covers every garment type, and this guide explains the foundations of what clothing alterations are, what they involve, and what you need to know before your first appointment.
Why Clothes from Shops Rarely Fit Perfectly
Before understanding alterations, it helps to understand why they are so often needed. The answer lies in how clothing is designed and manufactured.
Every garment sold in a shop is made to fit a standard set of measurements associated with a particular size label. These standard measurements are not based on any individual person’s body. They are statistical averages calculated from surveys of large populations, averaged across height, weight, chest, waist, and hip measurements, and then applied to a grading system that produces the size range sold in shops.
The problem is that real bodies do not conform to statistical averages in all dimensions simultaneously. A person may have a chest measurement that corresponds to a size 14, a waist that corresponds to a size 12, and a hip measurement that corresponds to a size 16. No single garment in a standard size range fits all three at once. This is not a problem with the person’s body. It is a structural limitation of standardized clothing production that affects almost everyone.
Standard sizes also vary between brands, between countries of manufacture, and between different product lines within the same brand. A size 12 in one shop may be cut entirely differently from a size 12 in another. This inconsistency compounds the fit problem and is one of the reasons that buying the same size in two different shops produces two entirely different fits.
Professional alterations exist to resolve this gap between what standard sizing can produce and what a specific body needs. A tailor takes the garment as a starting point and adjusts it to the actual measurements of the person wearing it. The result is a garment that fits that person specifically. Visit our full alteration service page to see the full range of garment types we work on.
Fit vs Size: Understanding the Difference
One of the most important distinctions for a beginner to understand is the difference between a garment’s size and a garment’s fit. They are not the same thing, and confusing the two leads to frustration when shopping and when communicating with a tailor.
Size is the label on the garment. It is a number or letter assigned by the manufacturer based on the standard measurements described above. Size is a rough indicator of the approximate dimensions of the garment but says nothing precise about how the garment will fit any specific body.
Fit describes how the garment behaves on a specific body. A garment fits well when it follows the contours of the body in the intended way, without pulling, gaping, sagging, or restricting movement. A garment can be the correct size for a person and still fit poorly, because that person’s proportions differ from the standard in ways the size label does not capture.
A skilled tailor works with fit, not size. When you bring a garment for alteration, the tailor assesses how the garment fits your body in its current state and determines what changes are needed to make it fit correctly. The size label is irrelevant to this process. What matters is the fabric, the seam allowances, and the relationship between the garment’s current dimensions and your body’s measurements.
The Difference Between Altering and Repairing
Beginners often use the words altering and repairing interchangeably, but they describe two distinct types of work. Understanding the difference helps you describe what you need accurately when booking an appointment.
Altering means changing the size, shape, or length of a garment to improve the fit. A garment that is structurally sound but does not fit correctly is altered. Taking in a waist, shortening a hem, adjusting the shoulder position, and tapering a sleeve are all alterations. The garment is not damaged. It simply needs to fit differently.
Repairing means fixing a garment that has been damaged. A torn seam, a broken zip, a moth hole, a missing button, a frayed cuff, or a split lining are all repair jobs. The garment may fit correctly but has a specific point of damage that needs to be addressed. Some garments need both alteration and repair at the same time, which is why it is always worth mentioning any damage you have noticed alongside any fit issues when you bring a garment in.
At Stitch in Time, we carry out both alterations and repairs across all garment types. Our zips, hems and invisible mending service covers the most common repair work, from broken zips and frayed hems through to specialist invisible mending on moth-damaged knitwear and delicate fabrics.
What Is Inside a Garment: Hidden Construction That Affects Alterations
When you look at a garment from the outside, you see only the outer fabric and the seams. Inside, there is often a layer of additional construction that is invisible from the surface, but that directly affects what alterations are possible and how complex they are. Understanding the basics of garment construction helps beginners set realistic expectations.
Lining
Many formal garments, including jackets, coats, trousers, dresses, and skirts, have a lining, which is a layer of lightweight fabric sewn inside the outer garment. The lining makes the garment more comfortable to wear, protects the outer fabric from contact with the body, and helps the garment maintain its shape. When a lined garment is altered, both the outer fabric and the lining must be adjusted separately and then reattached. This is why alterations on lined garments take longer and cost more than the same alteration on an unlined piece.
Interfacing
Interfacing is a layer of stiffening material bonded to the inside of specific areas of a garment, typically collars, cuffs, waistbands, button plackets, and lapels. It gives these areas structure and prevents them from stretching or distorting in use. Interfacing is fused or sewn to the wrong side of the outer fabric and is invisible from the outside. When alterations are made in an area with interfacing, the interfacing must be compatible with the new seam or edge position. In some cases it must be trimmed or replaced as part of the alteration.
Boning and Internal Structure
Fitted bodices in formal dresses, corsets, and structured evening wear often contain boning, which is a series of rigid or semi-rigid strips sewn into channels inside the bodice. Boning gives the garment its structured shape and provides the support that holds the bodice in position on the body without straps. When a bodice is altered, the boning channels must be adjusted, shortened, or repositioned to match the new seam positions. This adds complexity to bodice alterations on structured formal garments.
Seam Allowance
The seam allowance is the strip of fabric between the visible seam line and the cut edge of the fabric inside the garment. This strip of extra fabric is the material a tailor uses when letting out a seam to make a garment larger. If the seam allowance is generous, there is material available for letting out. If the seam allowance is very narrow, the garment cannot be made significantly larger at that seam without adding extra fabric. Checking the seam allowance is one of the first things a tailor does when assessing whether a garment can be let out.
Canvas and Chest Piece
High-quality tailored jackets and coats contain a chest piece, which is a shaped layer of canvas or interfacing sewn inside the front of the jacket between the outer fabric and the lining. The chest piece gives the jacket its characteristic structured shape and allows it to follow the curve of the chest without being stiff. Alterations to the front of a tailored jacket must account for the chest piece, which makes jacket alterations more demanding than alterations to unstructured garments.
Reading the Garment Label: What It Tells a Tailor
The care label sewn into a garment carries two types of information that are relevant to alteration work: the fiber content and the care instructions. Both of these help a tailor assess the garment before beginning any work.
Fibre Content
The fiber content label lists the percentages of different fibers in the fabric. Common examples include 100 percent cotton, 80 percent wool and 20 percent polyester, or 95 percent polyester and 5 percent elastane. The fiber content tells a tailor how the fabric will behave under heat from a pressing iron, whether it is likely to shrink, how it frays when cut, and what needle and thread type are appropriate for sewing it.
Natural fibers including wool, cotton, linen, and silk generally press well with steam and respond predictably to sewing. Synthetic fibers including polyester, nylon, and acrylic are more heat-sensitive and require lower iron temperatures. Blended fabrics combine the properties of both. A garment containing elastane has built-in stretch that must be accommodated in the seam technique used during alteration.
Care Instructions
The care symbols on a label indicate the maximum temperatures and methods the fabric can safely tolerate for washing, drying, and pressing. A tailor reads these before pressing any area of the garment, because applying too much heat to a sensitive fabric causes permanent damage including shine marks on wool, melting on synthetic fibers, and shrinkage on untreated cotton.
If a garment does not have a care label, or if the label is worn and unreadable, an experienced tailor will assess the fabric by appearance and handle to determine the appropriate approach. If you have removed the care label from a garment, it is worth mentioning this at the appointment so the tailor can make their own assessment before any heat is applied.
How to Describe a Fit Problem to a Tailor
One of the most common concerns for first-time alteration customers is not knowing how to describe what is wrong with the fit. Most people know that something feels or looks off but do not have the vocabulary to explain it precisely. This is entirely normal, and a good tailor will ask questions and assess the garment on the body rather than relying solely on verbal description.
That said, being able to describe the problem in your own words, even without technical language, helps the appointment go faster and ensures nothing is missed. The most useful information you can provide is:
- Where on the garment the problem is located, such as across the back, at the waist, at the collar, or at the hem
- Whether the garment feels too tight, too loose, too long, or too short in that area
- Whether the problem is visible, such as a visible pull or gape, or felt, such as restriction when moving
- Whether the problem appears when standing, sitting, or both
- What you would ideally like the garment to look or feel like when the work is done
You do not need to know the name of the alteration needed. Describing the problem clearly is enough. The tailor will translate your description into the specific work required and explain what they plan to do before beginning.
The Alteration Vocabulary: Common Terms Explained
While you do not need to use technical terms to communicate with a tailor, knowing what common alteration terms mean helps you understand what is being proposed and ask informed questions.
Taking in: Making a garment smaller in a specific area by moving a seam inward. When a tailor takes in the waist of a dress, they are sewing a new seam line closer to the body and removing the excess fabric between the original seam and the new one.
Letting out: Making a garment larger in a specific area by moving a seam outward, using the seam allowance. The tailor unpicks the original seam and resews it further from the original position, using fabric from the seam allowance to add width.
Hemming: Finishing the bottom edge of a garment at the correct length. Hemming involves measuring, marking, cutting, folding, and stitching the bottom edge so it sits at the intended position on the body and is neatly finished on the inside.
Tapering: Gradually reducing the width of a garment or part of a garment along its length. Tapering a trouser leg means the seam is moved inward more at the knee and ankle than at the hip, creating a narrower leg without changing the fit at the hip.
Suppression: Creating a waist curve in a garment by bringing the fabric inward at the natural waist. Waist suppression is achieved through darts, curved seams, or side seam adjustment and is what gives a garment a defined, fitted waist rather than a straight silhouette.
Dart: A triangular fold of fabric stitched into a garment to create shape. Darts take excess fabric and fold it away invisibly, allowing the garment to curve around the body. They are used at the bust, waist, back, and hip in many garment types.
Facing: A piece of fabric sewn to the inside edge of a neckline, armhole, or hem that folds to the inside and gives the edge a clean, finished appearance. Facings are often involved when a neckline is adjusted, or a hem is significantly altered.
Ease: The amount of extra fabric built into a garment beyond the body’s measurements. Ease allows the garment to be put on, taken off, and worn comfortably. A garment with no ease would be impossible to move in. A garment with too much ease looks loose and shapeless. Most alterations are concerned with adjusting ease to the right level for the wearer.
What a Tailor Cannot Change
Understanding the limits of alteration is as important as understanding what is possible. There are structural elements of a garment that cannot be altered without effectively reconstructing the garment from scratch, and an honest tailor will tell you this rather than attempting work that cannot be done correctly.
Shoulder Width and Position
The shoulder seam position and the width of the garment across the shoulders are one of the most difficult elements to change. Moving the shoulder seam significantly requires adjusting the sleeve head, the collar, the chest piece in a structured jacket, and the lining all simultaneously. For this reason, buying clothing that fits at the shoulders and altering everything else is far more practical than buying a garment that fits everywhere except the shoulders.
The Overall Pattern Size
A garment can be made smaller from its current size using seam allowances, but it cannot be made significantly larger than the seam allowances allow without adding new fabric. If a garment is two sizes too small, the available seam allowances are very unlikely to provide enough material to increase the size by that amount, and adding fabric changes the appearance of the garment in ways that are often visible. Alterations work best when the starting size is close to the target.
The Fabric Itself
A garment’s fabric cannot be changed by alteration. If the fabric is a colour you dislike, the wrong weight for the season, or not the texture you want, no alteration resolves this. Similarly, if the fabric has faded, pilled, or developed permanent shine marks from incorrect pressing, alteration cannot address these surface changes. The fabric is fixed, and all alterations work within its properties.
Design Elements Built into the Pattern
Some design features are built into the pattern of the garment and cannot be removed or moved without fundamentally changing the character of the piece. A raglan sleeve cannot be converted to a set-in sleeve through alteration. A cowl neckline cannot be converted to a crew neck. The shape of a peplum cannot be removed without cutting into the bodice construction. A tailor will tell you when a desired change crosses from alteration into reconstruction, and what that distinction means for the time and cost involved.
How to Prepare a Garment Before Your Appointment
Arriving at your alteration appointment with the garment in the right condition makes the assessment faster, more accurate, and more comfortable. A few straightforward preparations make a meaningful difference.
Wash the Garment First
Always bring a clean garment to an alteration appointment. Tailors work closely with clothing and handle it extensively during pinning, marking, and fitting. A garment that has been worn without washing since the last wear is not appropriate to bring for fitting. For garments that have never been washed, this is particularly important if the fabric is a natural fiber that may shrink on its first wash. Washing before alteration ensures the altered length or fit accounts for any shrinkage that would occur in normal use.
Bring the Right Shoes and Undergarments
For any garment where the length or fit is affected by what you wear underneath or on your feet, bring those items to the appointment. The heel height of your shoes changes how a hem sits. The specific bra or shapewear you plan to wear underneath a dress or top changes how the bodice fits. Bring the actual items you intend to wear with the garment on the occasion it is being altered for, or items that closely match them.
Do Not Pre-Alter the Garment
If you have already attempted a repair or alteration at home and it has not gone well, bring the garment as it is without attempting further changes. More home alterations on an already-altered garment limit the options available to the professional. Bring it in and explain what was attempted so the tailor can assess the current state accurately before deciding how to proceed.
Know the Occasion and the Timeline
If the garment is for a specific event, tell the tailor the date when you arrive. This allows them to confirm whether the work can be completed in time and to flag any concerns about the timeline before work begins. If the occasion is weeks away and the alteration is straightforward, there is no urgency. If the event is in ten days and the garment needs complex work, the tailor needs to know this immediately to manage expectations and their schedule.
What to Expect at Your First Alteration Appointment
Walking into a tailoring workshop for the first time can feel daunting if you do not know what to expect. The process is straightforward, and the appointment is typically relaxed and unhurried at a good specialist.
The tailor will begin by asking you to put the garment on. They will then look at how it currently fits and ask you what feels or looks wrong. Based on your description and their own assessment, they will pin the garment on the body to show you what the proposed alteration will achieve. This pinning stage is your opportunity to say whether the pinned result looks right, whether you want more or less adjustment, or whether the proposed change raises any concerns.
After pinning, the tailor will remove the garment, assess the work required, and give you a price and a time-frame. At a reputable service, this quote is given before any work begins. You are not obliged to proceed if the price or time-frame does not suit you. If you are happy with the quote, you leave the garment with the tailor and return to collect it at the agreed time.
At collection, try the garment on before leaving. A good tailor will expect this and will want to see the finished result on the body. If anything needs a small additional adjustment, this is the time to raise it. Minor tweaks after the main alteration are standard and should be included within the original price unless significantly more work is needed than was originally discussed.
At Stitch in Time, every alteration appointment follows this structure. We always give a clear quote before beginning work, we always invite you to try the garment at collection, and we always welcome questions at any stage of the process. If it is your first time using an alteration service, please let us know. We are glad to explain what we are doing and why at each stage.
Which Garment Types Can Be Altered
A common misconception among beginners is that alteration is only for formal or expensive clothing. In practice, almost any garment can be altered, and the improvements apply equally to everyday casual wear and formal pieces. The following gives an overview by garment type:
Trousers and jeans: Hemming, waist adjustment, leg tapering, seat adjustment, and crotch rise modification are all standard alterations.
Skirts: Hemming, waist taking in or letting out, lining adjustment, and vent or split repositioning are the most common skirt alterations.
Dresses: Hem length, bodice fit, neckline adjustment, strap shortening, side seam shaping, and zip replacement are all available. See our evening dress alteration service and party wear alteration service for more specific information on formal and occasion wear.
Jackets and coats: Sleeve shortening, body taking in or letting out, back vent adjustment, lining repair, and button repositioning are typical jacket and coat alterations.
Suits: A suit jacket and trouser combination can be altered across all dimensions. See our suits and formal wear service for the full range of options.
Knitwear: Jumpers, cardigans, and knitted tops can be shortened, taken in through the body, and have ribbing reattached after adjustment. Knitwear requires a specialist approach different from woven fabric alteration.
Curtains and soft furnishings: Shortening, width adjustment, heading tape changes, and interlining addition are available. See our curtain alteration service for full details.
Alteration Services at Stitch in Time, Sale, Greater Manchester
At Stitch in Time, we welcome customers at every stage of their experience with alteration services, from those using a tailor for the first time to those with years of tailoring experience. Our team carries out alterations on every garment type for customers across Sale, Altrincham, Stretford, Urmston, Trafford, Chorlton, Salford, Hale, and central Manchester. Alongside general clothing alterations, we offer specialist services for bridal wear, prom dresses, waistcoats, and invisible mending on damaged garments.
Every alteration is assessed individually, and a clear quote is provided before any work begins. If you have a question about whether a specific garment can be altered, bring it in, and we will give you an honest assessment at no charge.
To book your first alteration appointment or ask a question, call us on +447423301684 or visit 189 Cross Street, Sale, Greater Manchester M33 7JG.
Frequently Asked Questions
What is a clothing alteration?
A clothing alteration is a professional adjustment made to a garment to improve how it fits a specific person’s body. Common alterations include shortening a hem, taking in or letting out a seam to change the width of a garment, adjusting sleeve length, and reshaping the waist or bodice. Alterations are distinct from repairs, which address damage to a garment rather than fit issues.
How do I know if my clothes need altering or replacing?
If a garment is in good condition, is a style you like, and fits well in most areas but is wrong in one or two specific places, alteration is almost certainly the right answer. If the fabric is worn, faded, or damaged beyond repair, or if the garment fits incorrectly at the shoulders and cannot be adjusted there, replacement may be the more practical choice. A tailor can tell you quickly which situation applies to a specific garment.
Is there a minimum value a garment needs to be worth altering?
No, though the cost of the alteration should be proportionate to the value and intended use of the garment. A simple hem shortening on a casual pair of trousers costing thirty pounds is a reasonable alteration. Complex bodice restructuring on the same thirty-pound garment is unlikely to make economic sense. For garments with sentimental value, the financial calculation is different, and alterations are often worth doing regardless of the original cost of the item.
What should I bring to my first alteration appointment?
Bring the garment you want altered, clean and in the condition it is normally worn. Bring the shoes you will wear with it, or shoes of the same heel height. Bring any specific undergarments or shapewear you plan to wear underneath. If the garment is for a particular occasion, be ready to mention the date of the event. You do not need to bring measurements or know the technical name of the alteration needed. The tailor will assess everything from the garment on your body.
Can all types of fabric be altered?
Most fabric types can be altered, though the technique and equipment required differ significantly between fabric types. Plain woven fabrics including cotton, linen, polyester, and wool are the most straightforward. Silk, velvet, leather, sheer, and heavily embellished fabrics require specialist handling that not every alteration service provides. Always confirm that the service you are using has experience with your specific fabric type before leaving a delicate garment.
What if the tailor alters my garment and it still does not fit?
Try the garment on at collection before leaving the shop. This is standard practice and any good tailor will expect and welcome it. If something does not feel right, raise it immediately. Minor adjustments after the main alteration are normal and should be part of the service. If a more significant issue has arisen from the alteration work, a reputable tailor will discuss it with you honestly and propose a solution.
Can a garment be made larger as well as smaller?
A garment can often be made slightly larger by letting out the seam allowances, which is the extra fabric built into the seams on the inside of the garment. The amount by which a garment can be let out is limited by how much seam allowance is available. A well-made formal garment typically has more seam allowance than a cheaply produced one. If there is insufficient seam allowance to let the garment out to the required size, adding a panel of matching fabric is sometimes an option on specific garment types.
How long does a basic alteration take?
Simple alterations such as a straight hem on a plain unlined garment, button replacement, or a basic seam adjustment are typically completed within two to four days at Stitch in Time. More complex alterations on lined or structured garments, or work involving multiple changes on the same garment, take longer. We always give a realistic time-frame when the garment is assessed, so you know exactly when to expect it back.
Do I need an appointment or can I just walk in?
We recommend calling ahead to arrange an appointment, particularly during busy periods. This ensures you have dedicated time with our team and avoids waiting. You can reach us on +447423301684. For urgent alterations or quick assessments, we do our best to accommodate walk-in customers when availability allows. If you have a specific deadline, always call first so we can confirm we can meet your timeline before you make the trip.
Is there anything I should avoid doing to a garment before bringing it for alteration?
Do not attempt to pre-alter the garment at home if you are unsure of the technique involved. Do not cut fabric without confirming the final intended length first. Do not use heavy-duty adhesives or iron-on patches in areas you intend to have professionally altered, as these can interfere with the alteration. Wash the garment before bringing it in, and keep it stored flat or hung rather than crumpled to avoid additional creasing that would need to be pressed out before work begins. Stitch in Time: Clothing Alteration Specialists in Sale, Greater Manchester 📍 189 Cross Street, Sale, Greater Manchester M33 7JG 📞 +447423301684 🌐 stitch-in-time.org