Shop Star Bikinis

Gwyneth Paltrow

flattered her lean frame with a Vitamin A by Amahlia Stevens ruffled bikini top and barely-there bottoms.

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String bikini, Vitamin A by Amahlia Stevens, $162; barneys.com.

Even her beach looks are designer! Rachel Bilson showed her style savvy (and her hourglass bod) in a bandeau bikini from 3.1 Phillip Lim.

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Top, 3.1 Phillip Lim, $384; my-wardrobe.com.

Olivia Wilde

paired an ultra-flattering drawstring top-perfect for making the most of a smaller chest!-with matching cinch bottoms, both from Pool.

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Top in Moss, Pool, $145; poolswimwear.com.
Bottoms in Moss, Pool, $115; poolswimwear.com.

Extra-long strings add a sexy touch to Leann Rimes's seamless suit from Mikoh.

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St. Lucia top, Mikoh, $94; sirenecollection.com
Moorea bottom, Mikoh, $94; sirenecollection.com.

Sporty Cameron Diaz mixed and matched a pair of suits for a totally individual take on a bikini. Her coral Mikoh bottoms were a one-off (lucky Cameron!), but you can get the same piece in a very-now neutral.

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Maldives top in Sand, Mikoh, $94; sirenecollection.com.
Lenai bottom in Sand, Mikoh, $94; sirenecollection.com.
Monaco halter with braided leather detail, Vix, $88; net-a-porter.com.
Monaco bikini briefs with braided leather detail, Vix, $88; net-a-porter.com.

Bethenny Frankel

flaunted her Skinnygirl shape in a banded halter (just right for supporting a fuller bust) and a string bottom.

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Top, Becca, $40; everythingbutwater.com.
Bottom, Becca, $38; everythingbutwater.com.

Mother of four (!) Heidi Klum vacationed in a dangerously hot python-print suit from Lanvin. A subtly shirred trim added texture to the triangle bikini.

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Snakeskin-print suit, Lanvin, $710; net-a-porter.com.

No tan lines for Kate Bosworth! She slipped out of her straps and turned her peppermint-stripe Bikini Thief halter suit into a bandeau.

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Striped two-piece, Bikini Thief, $125; bikinithief.com.