Articles on: Adjusting your Shirt
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Creating your first shirt with our AI : back length

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


Best practice


La back length depends not only on your build but also on how you plan to wear the shirt:


Casual shirt worn outside the trousers

Formal shirt worn inside the trousers

A casual shirt should hide your stomach even when you raise your arms. It must not be too long either, to avoid the “skirt” effect. Seen from the side, it hangs about 8 cm below the top of the belt; in front it reaches mid-fly.

A formal shirt must be long enough to stay tucked when you move. The cloth should extend about 15 cm below the belt. In the back, the shirt reaches the base of the seat; in front it comes to the lower end of the fly.


The AI calculates a length adapted to your height and automatically tweaks it to match your chosen style: If you selected “shirt tucked in”, the AI adds + 2 cm; if you selected “shirt worn out”, it subtracts – 3 cm from the intermediate length.


When to adjust


🪜 Tall or short stature

This is accounted for by the algorithm, but you can amplify the effect: tall clients often add a little more length, while shorter clients tend to shorten the back to avoid visually shortening their legs.


🐘 Prominent stomach

Add + 2 cm so the shirt stays tucked. For neck sizes 48 cm or above you automatically benefit from our Big-&-Tall pattern, where the front is slightly longer for the same back length.


Compare with a shirt you already own


Measure the back length on a buttoned shirt laid flat, from the collar seam down to the hem.

Updated on: 12/05/2025