Fit, measuring and alterations · 8 October 2026 · 3 min read
What is vanity sizing, and why your size keeps changing
What is vanity sizing? Why size labels drifted larger and differ between brands, why you can be three sizes at once, and why body measurements avoid the problem.
InspirationThe short answer
Vanity sizing is the habit of labelling clothes with a smaller size number than their measurements would once have carried, so shoppers fit into a lower size. Over the decades many brands have let their sizes grow, which is why a size 12 bought today can measure noticeably more than a size 12 from a generation ago.
The term is also used more loosely for any gap between what the label says and what the garment measures, including the simple fact that two brands’ size 12s are rarely the same.
Why sizes drift
There is no single cause, and no secret rule. Several ordinary pressures pull sizes apart.
- No binding standard: size charts are largely voluntary, and each brand sets its own measurements for each number or letter.
- Flattery sells: a smaller number on the label feels good, so there is a commercial pull towards generous sizing.
- Different customers: a brand designs around the shape of the customer it has in mind, and that shape differs from one label to the next.
- Different cuts: an oversized shirt and a fitted dress in the same size are meant to measure very differently.
- Different countries: UK, US, European and Pakistani brands each use their own systems.
Why you can be three sizes at once
Put those together and it is normal to own a size 10 dress, a size 14 pair of trousers and a medium kameez, all of which fit. Stretch fabrics blur things further, and a loose kurta size tells you little about a tailored jacket. Pakistani ready-made brands each publish their own chart, so a medium at one label may be closer to a large at another. Our articles on UK, EU and US dress sizes for a kameez and brand size charts vs made to measure go into the conversions and their limits.
Body measurements sidestep the problem
Your bust, waist and hip measurements do not change with the label in the shop. A made-to-measure garment starts from those numbers and adds ease, the extra room that makes it comfortable, so the size printed on anything else you own stops mattering. The difference between the two kinds of measurement is set out in body vs garment measurements, and how to measure for a shalwar kameez shows how to take your own.
On our quote form you can enter your measurements in centimetres or inches, send a garment that fits so we can measure it, or ask for help measuring.
If you would rather order by size
You can also choose a standard UK size, from UK 6 to UK 24 or between sizes, and we confirm the key measurements with you before cutting. Treat the number as a starting point rather than an answer: say whether you like a relaxed or close fit, give your height, and mention any area where shop sizes never seem to work for you. Our custom stitching service explains the rest, and you can request a quote whenever you are ready.
Common questions
Is vanity sizing the same in every country?
No. Each country has its own size system and brands within it vary, so a UK 12, a US 8 and an EU 40 are only rough equivalents. Comparing measurements is more reliable than converting labels.
Why do Pakistani brand sizes vary so much?
Each brand publishes its own chart and adds a different amount of ease, so small, medium and large mean different things from label to label. Check the chart measurements rather than the letter.
Which measurement matters most if I only check one?
For a kameez or dress it is usually the bust, because the rest of the top is graded from it; for trousers and skirts it is the hip. A full set of measurements is still the safer route.
