YSL Bag: How To Spot Fake VS Real (With Pictures)

Written by
Ch David
YSL Kate Bag
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Last Updated on June 2, 2024 by Ch David

  • You have a YSL bag
  • And you’re not sure if it’s authentic

This guide gives you the piece of mind.

Alternatively, reach out to our expert YSL Bag Authentication Service — we have a team of experts ready to check your bag.

How to Tell If a YSL Bag is Authentic

The answer is: Check if the “SAINT LAURENT PARIS” engraving has the same thickness for all letters. Fake bags never have the right font-weight for their inscriptions.

1. Interior label

Fake Vs Real YSL LouLou tag
  • Authentic: The authentic text is thicker
  • Fake: “SAINT LAURENT PARIS” is too thin.

Also, see how the fake “MADE IN ITALY” print is too tall compared to the real one.

Authentic bags must be flawless. YSL is one of the top brands in the luxury industry.

Is it too hard? Reach out to our expert YSL authenticators:

2. Handler

Real vs Fake YSL Sac De Jour stitching
  • Authentic: Rich stitching density.
  • Fake: Thinner, longer, and less dense stitches.

3. SLP Engraving

You’ll find this on the other side of the label we’ve just looked at.

YSL Niki Original Real vs Fake labels
  • Authentic: Thinner print and stitching.
  • Fake: Text and stitching are too thick.

4. YSL Initials

This is the YSL metal logo outside the bag.

Real vs Fake YSL Niki Original
  • Authentic: Thicket letters which come out of the bag.
  • Fake: Thinner letters.

5. Zipper

Real vs Fake YSL Sac De Jour
  • Authentic: Thinner, smaller “SAINT LAURENT PARIS” engraving.
  • Fake: Very thick text — also too big.

A quick mention:

  • The steps we’ve written so far are the BEST ways to authenticate this item
  • The next few steps are still reliable methods…
  • … but they apply to non-top-versions of replicas available for this item

If in doubt, we recommend double-checking the steps we’ve explained above this line.

6. Stitching

YSL Kate Bag Real vs Fake Difference
  • Authentic: Thinner, longer stitching.
  • Fake: A bit thicker and shorter stitches.

7. Serial number

Some YSL bags have their serial number on the other side of the “SAINT LAURENT PARIS” interior label.

That’s what we’ll now check out.

YSL Niki Original Real vs Fake labels
  • Authentic: Thicker letters and numbers.
  • Fake: The text is too thin.

8. Buttons

YSL Kate Bag Real vs Fake Difference
  • Authentic: Thin and easy to read inscription.
  • Fake: Thicker, almost illegible text.

9. Dent

Fake Vs Real YSL LouLou pattern
  • Authentic: Deeper gap/dent into the leather.
  • Fake: Smaller — doesn’t look as deep as the original.

10. Shape

YSL Kate Bag Real vs Fake Difference
  • Authentic: Sharper corners.
  • Fake: Wider appearance.

Shortlist: Quickly tell a fake YSL

  1. Interior Label: Authentic has thicker text; fake has too thin “SAINT LAURENT PARIS” and tall “MADE IN ITALY” print.
  2. Handler: Authentic features rich stitching density; fake has thinner, longer, less dense stitches.
  3. SLP Engraving: Authentic offers thinner print and stitching; fake presents too thick text and stitching.
  4. YSL Initials: Authentic displays thicker letters protruding from the bag; fake has thinner letters.
  5. Zipper: Authentic has thinner, smaller “SAINT LAURENT PARIS” engraving; fake shows very thick and large text.
  6. Stitching: Authentic has thinner, longer stitching; fake uses slightly thicker and shorter stitches.
  7. Serial Number: Authentic includes thicker letters and numbers; fake’s text is too thin.
  8. Buttons: Authentic features thin, legible inscriptions; fake has thicker, almost illegible text.
  9. Dent: Authentic shows a deeper gap/dent in the leather; fake has a smaller, less deep dent.
  10. Shape: Authentic bags have sharper corners; fake ones exhibit a wider appearance.

Short on time? Make sure of this list.

It’s easier reading this list instead of going through the entire guide.


Need our opinion on your item’s authenticity? It’s a service we provide.

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Alternatively, use our free resources: written guides and video tutorials.

Thank you for reading this,

Ch Daniel and Ch David

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About the Author

David is the co-founder and co-CEO of Legit Check By Ch. David's experience: 5+ years of creating educational content in the fashion industry. 6+ years of authenticating luxury items. Currently, David is the Head Editor of the LCBC Library, where 1,000,000+ words have been published, in free guides, for over 1,000 items.
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