Serena Williams flaunted her body transformation in a swimsuit after she confessed to using a weight-loss medication. The athlete, 43, sported a bright yellow one-piece as she posed for a series of snaps Thursday. ,” she captioned the Instagram carousel and fans were quick to hype her up in the comments.

Williams revealed on the "Today" that she has been taking a GLP-1 medication to help with weight loss over the past yea r, following the birth of her second daughter. The 23-time Grand Slam champion said she had lost 31 pounds since starting the medication, although she didn't specify exactly which medication she used.

Tennis legend Serena Williams is sharing her journey with weight loss drugs, saying she's lost 31 pounds in 8 months using GLP-1s.