53 and fabulous!

Heather Locklear slipped into one very sexy bikini while on vacation with ex-husband Richie Sambora and their 17-year-old daughter Ava in Bora Bora.

The "Melrose Place" alum stunned in a striped black and white top with black bottoms, showing off her enviable physique in the tropical paradise.

She looked so good, even her ex admitted in a recent interview that Locklear is "still hot" and "looks better than ever" these days.

The trio reportedly went on the exotic getaway to celebrate Ava's 4.2 GPA at school and her 11 scholarship offers for colleges. 

The couple's daughter, who appeared in "This Is 40" and an episode of "Good Luck Charlie," visited Fordham, NYU and Syracuse earlier this week with her famous father ... Richie sharing a pic from the Jesuit school with the caption "I'm goin back to college!"

This is one good-looking (and clearly smart) family!

Check out more '90s hotties now in the gallery above, as well as more photos from the family vacay!

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