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Hint: She's wealthy, very wealthy.
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Paris Hilton is the owner of a very neat and pert bottom.
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HINT: Spot the other girl and recognise the bikini... She's the other half of those celebrity sisters.
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Nicky Hilton proves that good bums run in the family.
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HINT: A Toxic one?
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Britney clearly has nothing to be ashamed of - everyone has at least one dimple anyway.
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HINT: Twin Peaks.
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Lara Flynn Boyle clearly isn't a fan of being snapped in her bikini after giving the finger to the photographer.
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HINT: A well-known TV personality.
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Cat Deeley shows she looks good from any angle.
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HINT: An angelic toosh.
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Cameron Diaz makes everyone jealous.
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HINT: Not really a Monster.
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Oscar winner Charlize Theron flashes a perfectly toned back view.
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HINT: We normally see the boobs actually.
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Abi Titmuss turns around for the cameras - for a change.
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HINT: Bottoms Aloud.
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Girls Aloud star Sarah Harding braves the the fashion faux pas of a g-string bikini - and gets away with it.
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HINT: Coronation Street babe.
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No wonder Nikki Sanderson is smiling - with a rear like that she must be chuffed.