Christie Brinkley, 66, is back in a bikini after hip surgery

Christie Brinkley is back in a bikini.

Less than two months after getting hip replacement surgery, the 66-year-old supermodel showed off her famous curves in a turquoise bikini top and black spandex shorts.

“Cliffhanger…” she captioned a series of Instagram shots on Saturday, posing against a seaside cliff. She accessorized her beach look with a straw sun hat and silver bracelets.

Commenters were blown away by the supermodel’s age-defying looks, with one asking, “Can I come visit you and drink from the fountain of youth in your backyard!!”

“You are the model of ageless,” commented another, while a third wrote, “C’mon?! Still as gorgeous as ever.”

Brinkley has been using her time on the beach to draw attention to climate change. Alongside her lookalike daughter, 22-year-old Sailor Brinkley Cook, the catwalker is working to save the thatch palm, an endangered tree species in the Caribbean.