Cindy Crawford, 50, Looks Incredible in String Bikini During Family Vacation

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Cindy Crawford has still got it!

The 50-year-old supermodel
defied her age once again by flaunting her curves in a sexy black bikini during a family vacation in the Bahamas. Cindy's husband, Rande Gerber, snapped the pic of his gorgeous wife basking in the sun and sea. "Rande caught me in the blue lagoon! Thanks for the [camera]!" Cindy Instagrammed on Sunday.

WATCH: Cindy Crawford Dishes on How Pal George Clooney Handled His First Year of Marriage

The mother-of-two
must have been standing in the fountain of youth because she also shared a flawless makeup-free photo of herself, writing: "Just another day in paradise."

Cindy's lookalike daughter
, Kaia Gerber, also joined her parents for the family getaway, and looked beyond gorgeous in a snap posted by her proud father. "Lunch with my little angel," Rande gushed over his 14-year-old daughter.

MORE: Cindy Crawford Clarifies Comment About Retiring at 50 -- 'I'm Not Making Any Final Statements'

When ET spoke with Cindy, she admitted that she has some concerns about Kaia getting into modeling. "Today, models are expected to be so tiny and I worry about that for her, because that was never my natural body type and I don't think it'll be hers either," she said. "Still, I'll say to her, 'Enjoy carbs while you can!'"