Tennis legend Serena Williams shared pictures of her new six-pack in a series of post-workout selfies, showcasing the hard work she has put in since giving birth in August 2023.
Serena Williams’ fitness routine is an ace.
The 23-time Grand Slam tennis champion nearly poked the internet’s eye out when showing off her post-workout look, which included her rock-hard abs.
In a series of mirror selfies shared to Instagram July 11, Serena displayed her six-pack while sporting an all-black workout ‘fit, complete with a sports bra and leggings. She captioned the post, “Working out and working on my angles.”
After sharing the snaps, the Wimbledon champ was flooded with support from fellow celebs. Comedian Amy Schumer reminded Serena of her legend status by commenting alongside fire emojis, “GOAT.”
Reality TV star La La Anthony chimed in, too, writing, “Always preparing for summer!!!!!”
While the update from Serena—who shares kids Olympia, 7, and Adira River, 22 months, with husband Alexis Ohanian—was celebrated with excitement, it is the result of months of serious effort following the birth of her second daughter in August 2023.
“Alright, I'm getting back into the swing of things,” the Wyn Beauty founder said in a January 2024 Instagram Reel of her lifting weights. “This is not my usual weight, but it'll do until I get back to where I need to be.”
In addition to her workout updates, the Olympic gold medalist kept her Instagram followers up to date on her weight loss journey by sharing regular check-ins of her trying to fit into a denim Valentino skirt that she bought while pregnant with Adira. In one post, she noted her disappointment in her lack of progress.
“I’ve been gyming a lot, but I don’t know if the needle is moving,” Serena said while attempting to put on the skirt in a May 2024 Instagram video, but ultimately not fitting. “I can’t say I’m happy about this. It’s getting there. It’s almost there.”
“I just wanna cry,” she continued while emphasizing she wouldn’t give up, “but I’m not. I’m gonna stop eating all those snacks.”
By December, the athlete had achieved her goal and showcased the “finale” of the denim skirt fitting.
“It just fits. An ounce more, it wouldn’t,” Serena said in the Instagram update, before adding “I need to give myself credit.”
Read on for more stars who have showcased their weight loss transformations.
Tammy Slaton
Tammy Slaton may be a star of TLC’s 1,000-Lb. Sisters, but she didn’t want to be beholden to that title forever.
“I’m down 500 pounds now, around 500,” the 38-year-old said in a confessional on an April 2025 episode of her show. “When I was at my heaviest, I was 700-plus pounds. Right now, I’m weighing in at 238.”
She underwent bariatric surgery in 2022, a choice her physician has praised as the right one for her.
“Tammy has consistently demonstrated her dedication to making sustainable lifestyle changes to maximize the benefits of her surgery,” Dr. Eric Smith told People in October 2024. “I've emphasized the importance of making small, daily adjustments to ensure not only her continued progress but also her long-term success. She's truly committed to her health journey.”
Jelly Roll
It seems as if every time Jelly Roll hits a red carpet, he’s down a sizable slice of weight.
“I started at 540 pounds and I was 357 pounds this morning,” the singer born Jason DeFord told Pat McAfee in April 2025 during the ESPN host's Big Night Aht live show. “I’m gonna lose another 100 pounds and go skydiving with my wife in Sweden, baby!"
The 6-foot-1 artist admittedly needed to overhaul his relationship with food to get where he wanted to go. "I've always said that I believe obesity is directly connected to mental health," he explained on an October 2024 episode of On Purpose With Jay Shetty. "I know how easy it is for people to go, 'Just quit eatin' so much, just work out, it's so easy!' I wish I looked at food that way.”
Weight was still “the mountain” in front of him, Jelly Roll noted, but his lifestyle changes were working.
"I'm learning, I'm being very diligent with it,” he said. “I'm taking it serious, I'm drinking a bunch of water, I'm cold plunging, I'm eating right, I'm doing good."
Al Roker
Al Roker wasn’t kidding around with the title of his cookbook Recipes to Live By.
Because having lost a hard-fought 100 pounds, the longtime TODAY weatherman literally walks the walk (aiming for at least 10,000 steps a day), watching what he eats and fitting in some sort of exercise on a daily basis.
“My mantra is ‘something is better than nothing,’” he told People in a June 2025 interview. “Maybe you’ll be running marathons or entering weight-lifting contests, but I think most people just want a level of fitness that improves their quality of life.”
Roker underwent gastric bypass surgery in 2002 to get his fitness journey underway, but, he acknowledged, “There’s no magic bullet.”
Surgery is “not the end,” he advised. “You’re still going to have to put in the work.”
Jason Kelce
While previously known for the tush push, former Philadelphia Eagles center Jason Kelce has been busy showing off his buff bod.
Not that the athlete wasn’t in fighting shape during his 13-year career in the NFL, but he’s down at least 25 pounds from his playing weight of 295, sharing during the 2025 Truist Championship pro-am golf tournament in Philly that he weighed around 270.
All of which is part of his retirement plan. “I feel like for some reason, 250 to 260 feels like I'll be still big and be happy with the way I look without having a six-pack,” Kelce told GQ in June 2024. “But I’ll still be able to have that stature a little bit.”
Really, the most important aspect for the father of four daughters with wife Kylie Kelce was to be able to keep pace with his kids.
Then weighing in at 277, “my back already feels better,” he shared. “My knees already feel better. So another 20 pounds hopefully will make that much more adept at playing with my children.”
Rosie O'Donnell
It wasn’t just a change of scenery that did the trick for Rosie O’Donnell, who relocated with her family from the U.S. to Ireland.
"I've lost more weight here,” she shared in a March 2025 TikTok. “I am on Mounjaro for my diabetes and one of the side effects is you lose weight.”
The former View cohost had recently gone shopping for better-fitting clothes in Dublin. “I’m one of those people,” she said, “who's always had a weight issue and now that I'm a size large, instead of an XL or a 2XL, I find it shocking.”
Jazz Jennings
Jazz Jennings embarked on a diet-and-fitness journey in 2022, explaining on Instagram two years later, “I finally care about myself after years of neglecting my health. I had truly let myself go when it came to eating. I am so proud of my weight loss, and I feel my confidence radiates through."
In August 2024, the I Am Jazz star shared that she had lost almost 100 pounds and was “so proud” of her progress.
