Charisma Carpenter gave fans an up-close-and-personal glimpse at her birthday celebrations after turning 57 on July 23.
The Buffy the Vampire Slayer star shared a carousel of photos of her activities, including some bikini snaps that left her followers' jaws on the floor.
Charisma shared a close-up photo of herself in a bright red two-piece that left little to the imagination as she sat on a sun lounger.
Another image showed her in the same plunging bikini, accessorizing with oversized sunglasses and a bandana holding back her long hair.
"What a wonderful summer and it's still early!" she wrote alongside the photos.
She added: "So grateful for the friends in my life who helped me celebrate all this week the joy of dancing til you're dripping wet with sweat, live music, clubbing, travel, boating, paddle-boarding, World Cup watching, eating well and embracing tan lines. Thank you! You know who you are!"
© InstagramHer followers were in awe of her appearance, with one commenting: "Insanely beautiful woman." A second said: "You are more lovely now, than you have ever been." A third added: "Still as beautiful as when I first saw you on Buffy."
There's no denying that Charisma is in fantastic shape, but her figure doesn't come without effort, especially after turning 40.
"I have to work so bloody hard at it. Let me tell you, hitting 40 is not fun," she said in a 2013 interview.
© Instagram"My weakness is potato chips, and I love a good cocktail. My metabolism has changed so much, and I just have to work really, really hard at it, so it's not easy."
She continued: "It's good, old-fashioned diet and exercise, which I sort of have to clean up right now because we're going to be heading back to work pretty soon and I've gotta look good.
"I've got to feel good. I'm working with 20-year-olds. Are you kidding me? It's so hard! They’re eating gummy bears and pretzels with peanut butter fillings and drinking whatever they want, and I'm like, 'You frustrate me! I want to have that metabolism again!'"
© InstagramCharisma's bikini post comes 22 years after she famously posed for Playboy in a photoshoot captured by celebrated photographer Russell James, and it was a time when she felt "the best" in her body.
"When I posed for Playboy, that's the best I ever felt in my life," she added. "But it did feel really good when I was doing The Lying Game and working with my trainer. They helped me rock it out. I'm lucky."
© Alamy Stock PhotoCharisma first rose to fame starring alongside Sarah Michelle Gellar in Buffy the Vampire Slayer from 1997 until 2003 before reprising her beloved role in the 2023 Audible series Slayers.
In 2021, the actress publicly accused Buffy creator Joss Whedon of "hostile and toxic" behavior during filming, claiming he once called her "fat" while she was four months pregnant and threatened to fire her.
Her allegations prompted several former co-stars to publicly support her and share their own experiences.
