This article is also available in:

Creating your first shirt with our AI : waist taper measurement

You are creating your first LE CHEMISEUR® shirt with our AI and would like to adjust the waist? This page is for you.

Best practice

The waist taper of a shirt is the half-circumference at stomach level measured on the shirt (not on the body). It should let you sit and relax your belly without pulling on the button, while avoiding excessive billowing. Standing with your stomach relaxed, you should be able to pinch about 2 cm of fabric on each side.

When to adjust

The LE CHEMISEUR® AI is based on ten years of expertise and data from more than 20 000 clients. You can generally trust it—and you are covered by our Fit Guarantee.

📏 You like a very close fit

Remove – 1 cm for a body-skimming shirt (slightly less freedom of movement). Also remove – 1 cm from the chest. Even if you are slim, avoid reducing the waist too much, it risks making a non-flattering "hourglass" shape.

🪀 Your weight fluctuates

Enter your highest weight so the AI can take it into account. Adding back darts later is an easy, inexpensive alteration that can slim the waist by 2–4 cm.

Measuring the waist taper on a shirt you already own

Button the shirt, lay it flat and measure the full width at the narrowest point, edge to edge without stopping at the seams.

Compare with a non-stretch shirt if you wish to fine-tune your Fit Key.

Updated on: 12/05/2025

Was this article helpful?

Thank you!