Serena Williams says GLP-1 medications helped her lose 31 pounds.

The retired tennis pro explained that she’s trying to combat the stigma associated with weight loss drugs after losing 31 pounds.

Serena Williams showed off her slim figure in a bold swimsuit after revealing she’s been using a weight-loss medication. The athlete, 43, sported a bright yellow one-piece as she posed for a series of snaps Thursday. “melanin mellow-yellow ,” she captioned the Instagram carousel — and fans were quick to hype her up in the comments.