Charisma Carpenter, 44, decided to celebrate her 44th birthday with a nude black-and-white photograph of herself - and shared it with her 170,000 followers.
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Charisma, who played cheerleader Cordelia in Buffy The Vampire Slayer, looked elegant in the snap, which showed off her tattoos as she posed in front of a well-lit window.
Charisma cheekily added: "Yes, my bday suit for my bday."
The mum-of-one looked effortlessly beautiful in the snap, but she recently admitted that she works "bloody hard" at keeping her body in such good shape.
She said: "I have to work so bloody hard at it. Let me tell you, hitting 40 is not fun."
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"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.
"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."
She added: "But after I had my son, that’s the best I ever looked.
"And when I posed for Playboy that’s the best I ever felt in my life."
hers wasn't the only exciting snap for Buffy fans on Twitter this week; co-stars Sarah Michelle Gellar (Buffy) and Anthony Stewart Head (Giles) also posted a fun reunion snap of their own.
Anyone else suddenly hankering for a Buffy reunion?