1. RAQUEL WELCH
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Cavewomen probably did not look like this. But tatters sell, so that's what Hollywood did for One Million Years B.C. #marketing
21. BO DEREK
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Still a perfect 10. Or a ?.
20. GWYNETH PALTROW
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The main draws of the 'Talented Mr. Ripley' go like this: Gwynnie's beach-holiday wardrobe, young Jude Law, then [insert seven other things], and finally Matt Damon's honestly kind of lackluster shapeshifting abilities.
19. PAMELA ANDERSON
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Ditto.
18. PHOEBE CATES
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Oh, what some slo-mo and a little red suit can do.
17. KATE BOSWORTH
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The Blue Crush bikini that put Kate Bosworth on the map.
16. RACHEL MCADAMS
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Blah blah, they love each other forever, but can we talk about this whole bathing costume situation? Ace.
15. SUE LYON
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A bikini: probably the least scandalous thing about 'Lolita', really.
14. HALLE BERRY
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And another OG Bond girl referencing her predecessor.
13. URSULA ANDRESS
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The OG Bond girl.
12. DEMI MOORE
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Moore as the fallen Angel who certainly didn't *look* like she'd ever retired.
11. CAMERON DIAZ
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Now a short interlude of Charlie's Angels running on the beach with surfboards under their arms.
10. KEIRA KNIGHTLEY
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Like a moving Horst photo in an all-around gorgeous movie. Photo: Everett
9. MARILYN MONROE
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The characters of How to Marry a Millionaire might have accomplished their goal to varying degrees of success, but Marilyn's ultra-flattering ruched one-piece went over well with *all* audiences. Photo: Everett
8. BRIGITTE BARDOT
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The film is literally titled Girl in the Bikini. So they better have made it a good one. Photo: Getty
7. BROOKE SHIELDS
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If you didn't already know it, you could probably guess what the Blue Lagoon was about by looking at Brooke Shields' shipwreck-underwear-thing. (Answer: naked, unsupervised teens.) Photo: Getty
6. ROMY SCHNEIDER
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'La Piscine' had everything: extremely beautiful stars, an extremely French plot, and the chicest wardrobe, including this flawlessly cut white maillot. Photo: Getty
5. CARRIE FISHER
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Though the late Carrie Fisher drew attention to how problematic it was, the bondage-inspired two-piece remains firmly in the HOF of movie costumes. Photo: Getty
4. FARRAH FAWCETT
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Hung in teenage bedrooms the world over.
3. KIM KARDASHIAN
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On the flip side (heh), a celebrity most of the world has seen naked in some capacity managed to top even herself...with clothes. Seen here on a girls' vacation in Mexico, she wears thong swimsuit bottoms, which prompted Piers Morgans to comment on her cellulite, though nobody asked him.
2. TAYLOR SWIFT
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This pic put to rest the conspiracy theory that Taylor Swift doesn't have a belly button (almost exclusively wearing high-waist bottoms tends to do that), though the debate surrounding the bent railing rages on. Photo: Instagram