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