Made-to-measure patterns fit better because they are drafted from your own measurements, while a standard size is drafted for one imaginary body with fixed proportions between bust, waist, hip and height. Most people differ from that body somewhere, by a size between bust and hip or a few centimeters in torso length or height, so a standard size needs adjusting in those places. A made-to-measure pattern builds those differences in from the start.
How are standard sewing sizes made?
A pattern company drafts one base size from a set of body measurements, then grades it up and down in regular steps. In many European charts, each size adds 4 cm (about 1 1/2 in) to bust, waist and hip at once, and the larger sizes add 6 cm. Lengths change much less, and height often does not change at all: many women's charts assume a height of around 165 to 170 cm (5 ft 5 in to 5 ft 7 in) for every size.
Here is what that looks like on a typical European chart (body measurements, not garment measurements):
| EU size | Bust | Waist | Hip | Height |
|---|---|---|---|---|
| 36 | 84 cm (33 in) | 68 cm (26 3/4 in) | 93 cm (36 5/8 in) | 168 cm |
| 38 | 88 cm (34 5/8 in) | 72 cm (28 3/8 in) | 97 cm (38 1/4 in) | 168 cm |
| 40 | 92 cm (36 1/4 in) | 76 cm (30 in) | 101 cm (39 3/4 in) | 168 cm |
| 42 | 96 cm (37 3/4 in) | 80 cm (31 1/2 in) | 105 cm (41 3/8 in) | 168 cm |
| 44 | 100 cm (39 3/8 in) | 84 cm (33 in) | 109 cm (42 7/8 in) | 168 cm |
Every row has the same shape: the hip about 9 cm larger than the bust, the waist 16 cm smaller. Real bodies do not follow one ratio.
Where do standard sizes go wrong?
Take someone with a 92 cm bust, an 80 cm waist and a 109 cm hip, 160 cm (5 ft 3 in) tall. By the chart above, that is an EU 40 at the bust, an EU 42 at the waist and an EU 44 at the hip, and 8 cm shorter than the chart assumes. With a standard pattern, they would trace a size 40 bodice, grade out to 44 at the hip, shorten the bodice and the skirt, and probably still make a toile.
The most common mismatches, and what they look like:
| Your body vs the chart | What you see in a standard size | Usual fix |
|---|---|---|
| Hip two or more sizes above the bust | Skirt or trousers tight at the hip, top loose | Grade between sizes |
| Larger cup than the pattern's (often a B cup) | Pulling across the bust, gaping armholes | Full bust adjustment |
| Shorter or longer torso | Folds above the waist, or a waist seam too high | Shorten or lengthen the bodice |
| Shorter or taller overall | Hems, sleeves and crotch depth in the wrong place | Length adjustments at several lines |
| Broad or narrow shoulders | Shoulder seams hanging off or pulling | Shoulder adjustment |
| Hollow lower back | Horizontal folds at the back waist | Swayback adjustment |
Each fix is learnable, but together they are why many beginners give up on fitted garments. Our post on why store-bought clothes do not fit explains the same problem in ready-to-wear.
What does a made-to-measure pattern do differently?
A made-to-measure pattern is drafted from blocks using your own numbers: bust, waist and hip separately, plus lengths such as back waist length, waist to knee and arm length. The grading between sizes, the torso length and the hem position are all part of the draft. You then add ease for the fit you want, which becomes a style choice rather than a fix.
With Sewly, you can draft any of its garments to your own measurements, with a guided measuring assistant explaining each one, or pick a standard size (women EU 32–54, US 0–22, UK 4–26; men XS–3XL; children 2–14 years). A few numbers (height, bust, waist, hip) are enough to start; the rest are filled in from the nearest size and you can refine them. The custom-fit sewing patterns page explains the approach.
What can made-to-measure not fix?
Being drafted from your numbers does not make a pattern perfect.
- Measuring errors. A tape held too tight, or a waist measured in the wrong place, goes straight into the pattern. Our guide on how to take body measurements shows where each one goes.
- Posture and asymmetry. A forward head, one shoulder lower than the other or a very upright back are not captured by tape measurements.
- Fabric. A stiff denim and a fluid viscose feel different at the same size.
- Preference. Some people like a waistband snug, others loose. That is a fit choice you adjust once and keep.
For fitted garments, a toile is still the best check, but it is usually a smaller job: confirming the fit rather than fixing three sizes at once.
When are standard sizes good enough?
Standard sizes work well for loose garments with plenty of ease (oversized tops, kimono jackets, elastic-waist skirts), for knits with stretch, for children's clothes, and for bags and home pieces where no body is involved. If your measurements fall within one size on the chart and your height is close to the chart's, you may need few or no adjustments. The size charts let you check in a minute.
Tip: Whichever way you go, write your measurements and the date on a card and keep it with your patterns. Bodies change, and remeasuring every six months or so keeps your patterns honest.