Since having her second child in 2023, tennis star Serena Williams has been struggling with the postpartum pounds that were weighing her down.

On a weight loss mission, the 42-year-old mother of two invited her Instagram followers to join her journey, and using a denim skirt as a tracker, she shared fittings with fans.

Recently, the tennis legend appeared looking fit and fabulous, and fans are concerned she’s using the quick-fix magic drug that’s become popular among celebrities.

After welcoming her second daughter Adira River with husband Alexis Ohanian in August 2023, Serena Williams went on a journey to lose her stubborn baby weight.

On January 28, the athlete started documenting her weight loss, tracking her size with a Valentino denim skirt that she bought when she was pregnant.

“I was like, ‘I’m gonna be able to fit in this when I don’t have a belly,’” the Grand Slam champion says in an Instagram clip she captions “The Diary of a Denim skirt (part 1).”

“Ok everyone, I have been working my [butt] off! Let’s see what happens with my jean skirt. Can I fit it yet? Check it out!” she writes in the post.

But, like before, she was unable to pull it up over her hips.

“Almost there…I just want to cry,” she said, adding the skirt was “an inch higher” than it was in January.

Trying to pull the skirt up over her hips, Williams tells her fans, “And honestly, I should have been able to fit it by now, but I ran into some… I got distracted for about a month. And so, I’m about a month behind. We have a ways to go.” Before saying the skirt was going back in the drawer “for now,” the tennis star adds, “OK, I feel like if I go to the gym then I’ll be able to fit it in a month.”