Q: What is the Fit Key?

<h3 id="thefitkey">The Fit Key</h3> The Fit Key is a 5-character code that stores the measurements of your custom shirt or trousers, allowing you to reorder in one click. <img src="https://storage.crisp.chat/users/helpdesk/website/-/2/1/5/d/215d429d5477cc00/image_aqelky.png" alt="The Fit Key is printed flat inside your shirt, next to your Signature." width="300" height="300" /> Create your first Fit Key simply by entering your Weight, Height and Age, and our AI will calculate your optimum fit. First <a href="https://lechemiseur.fr/en/eshop/dress-shirts">choose a shirt</a>. To reorder using an existing Fit Key, locate it inside your garment or log in to <a href="https://lechemiseur.fr/en/my-account">your account</a> and click “Use this shirt as a starting point.”

Q: Book an Appointment

You can book an appointment at the Showroom, or via Video Call / Phone. We speak (some) English. Don't hesitate to <a href="http://lechemiseur.fr/en/appointment">follow this link to choose your time slot</a>. <a href="http://lechemiseur.fr/en/appointment"><img src="https://storage.crisp.chat/users/helpdesk/website/215d429d5477cc00/image_1v7926e.png" alt="" /></a>

Question 1

Create your first fit with AI — simple and reliable!

Accepted Answer

At LE CHEMISEUR®, we know that ordering a custom-made shirt online for the very first time can raise a few questions. Here’s everything you need to know to place your order with total peace of mind:

🧑💻 How does our patented AI actually work?

Our AI is trained on real data from 20,000+ clients and honed by our Paris team’s 10 years of expertise and nearly 100,000 shirts shipped. A French Tech award winner in 2014, the algorithm leverages cutting-edge machine-learning techniques and is continuously refined to deliver ever-more accurate fits.

✅ What if the initial fit isn’t perfect?

Relax—your first order is covered by our 100-day Fit Guarantee. If needed, we’ll remake your shirt for free.

Thanks to this guarantee, the efficiency of our algorithm, and the loyalty of clients who reuse their Fit Key, our return rate is below 5 %.

🛡 Why you can trust our AI

20,000+ clients analysed for precision
4.7-star rating on Google from 750+ reviews
100,000 shirts delivered successfully

🌿 Eco-friendly and responsible

LE CHEMISEUR® has been B Corp–certified since June 2024, underscoring our ethical and environmentally responsible approach. Ordering from us means choosing sustainable fashion.

💬 What customers say

“I had a few doubts, but the AI’s accuracy amazed me!” – Antoine, client since 2022 “A perfect shirt on the first try—impressive. I highly recommend it.” – Peter, client since

Question 2

What is the Fit Key?

Accepted Answer

The Fit Key

The Fit Key is a 5-character code that stores the measurements of your custom shirt or trousers, allowing you to reorder in one click.

The Fit Key is printed flat inside your shirt, next to your Signature.

Create your first Fit Key simply by entering your Weight, Height and Age, and our AI will calculate your optimum fit. First choose a shirt.

To reorder using an existing Fit Key, locate it inside your garment or log in to your account and click “Use this shirt as a starting point.”

Question 3

Contact Us

Accepted Answer

Bonjour! We’re looking forward to hearing from you!

We speak (some) English.

Email: lecontact@lechemiseur.fr

Phone: +33 1 75 85 02 48

WhatsApp: chat with us! On a mobile, enter +33 1 75 85 02 48, click here or scan the QR code:

Question 4

The Fit Guarantee

Accepted Answer

Your Fit Guarantee is valid for 100 days on your first shirt (or trousers)

How to return an item?

Wash your shirt two or three times before deciding on adjustments. If your new item is slightly too large (by 1–2 cm), that's normal: our AI automatically anticipates the natural shrinkage of the fabric.
You can have your shirt or trousers adjusted by your local tailor and get reimbursed. Check the list of possible alterations by a tailor.
Do you prefer we handle everything? It’s easy: log in to your customer account, select your item, then click on **“Start from this shirt / these trousers”. **Your measurements will be pre-filled automatically.
Easily adjust your Fit Key with our step-by-step tutorials, as if you were ordering a new shirt. It's easy, your first garment serves as a reference.

5. Complete your order by entering the gift code retour-H4GB in the dedicated field. You’ll receive a prepaid return label by email within one business day, or we might let you keep the original shirt. Please allow around two weeks for an alteration, or standard production times for a complete remake.

📞 Need further assistance?

We’re passionate about made-to-measure and always happy to help! Don’t hesitate to contact us. You can include photos if needed.

Consider

Question 5

Book an Appointment

Accepted Answer

You can book an appointment at the Showroom, or via Video Call / Phone.

We speak (some) English. Don't hesitate to follow this link to choose your time slot.

Question 6

Adjusting your Fit Key for a follow-up order

Accepted Answer

Has your body shape changed? Tweaking your Fit Key is easy—follow the guide!

🗝 Step 1 : Log in and choose your Fit Key

Log in to your account and click “Use this shirt as a starting point”.

The easiest is to restart from your previous shirt.

You can also find your Fit Key directly on the label sewn inside your shirt or trousers:

📏 Step 2 : Choose your shirt fabric

Choose your dress shirt, and on the chosen page, you will see your Fit Key already selected (or a drop-down if you have several Keys).

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