Start by examining the logo and branding on a YSL handbag. Authentic YSL handbags have precise and clean stitching, with no loose threads or uneven lines. The YSL logo should be crisp and well-defined, with no signs of smudging or fading. Pay attention to the font, spacing, and overall quality of the branding.

Authentic YSL handbags are made with high-quality materials. The leather should feel soft and supple, with a distinct smell. Pay attention to the hardware, such as zippers and clasps, which should have a solid weight and smooth operation. Counterfeit handbags often use cheaper materials, resulting in a noticeable difference in quality.

Check for a serial number and authenticity card, which are included with genuine YSL handbags. The serial number should be engraved or embossed on a leather patch inside the bag, and the authenticity card should have matching information. Counterfeit handbags may have serial numbers that are poorly engraved or lack an authenticity card.

To ensure the authenticity of a YSL handbag, always purchase from authorized retailers. Avoid buying from unknown sellers or unauthorized online platforms. Authorized retailers maintain strict quality control standards, reducing the risk of purchasing counterfeit products. If the price seems too good to be true, it probably is.