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Creating your first shirt with our AI: collar measurement

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

How your shirt collar should fit

The collar should close comfortably without gaping at the sides. Getting the collar size right is important even if you usually wear it open, so that the shirt drapes nicely across the shoulders and armhole.

Trust the AI

You can generally trust the AI, and you are covered by our Fit Guarantee. In these cases, you can add a bit to the collar :

🦍 You have a particularly thick neck

Some customers simply have a rugby-player build with a thick neck, which the AI doesn't predict well. If ready-to-wear shirts feel tight but you can still just about close the button, add 2 cm. If you can't close the button at all, feel free to add 3 to 4 cm.

😌 You simply prefer extra comfort

Add + 1 cm to the collar.

How to measure the collar on a shirt you already own

Lay the shirt flat. The collar measurement is the distance between the centre of the button and the outer edge of the buttonhole.

Updated on: 10/12/2025