Donna D’Errico celebrates 55th birthday in red-hot ‘Baywatch’ swimsuit

This “Baywatch” babe doesn’t age.

Donna D’Errico marked her 55th birthday Thursday by hitting the beach in a red one-piece swimsuit similar to the iconic maillot she wore on the show.

But the way she styled the suit this time around likely wouldn’t work for lifeguarding; D’Errico pulled the piece halfway down her body, adding a white tank on top — which she lifted up to highlight her curves.

“Posting some cake 🎂 on my birthday because I said I would, because I feel like it, and because why not,” D’Errico captioned her sexy Instagram post of the look.

“Have fun today everyone. I certainly will! I love you all!”

As always, D’Errico directed followers to her popular OnlyFans account for more of her racy content.

Her fans loved the throwback moment, with one calling her an “ageless beauty” and another remarking that she still looks “so young.”

Earlier in March, D’Errico joked about launching a swimwear line “for women over 50,” sharing an Instagram Reel of herself modeling a teeny-tiny red bikini.

“Follow me for more AARP tips,” the former Playboy Playmate joked.

She previously referenced her “Baywatch” days for a Valentine’s Day-themed post in February, for which she slipped into lacy scarlet lingerie look.

“I like this red one piece better than the other one,” D’Errico joked in her caption, referencing the show’s swimsuit.

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The Alabama-born beauty made headlines last year for clapping back at trolls who called her “too old to wear a bikini” on social media.

“Let me tell you something that might surprise you. I can actually wear and do literally whatever I want,” D’Errico wrote at the time, sharing a new snap of herself clad in — what else? — a skimpy swimsuit.