Famous beach bods PHOTOS Zac Efron Pee'd on in The Paperboy; dating Lily Collins? Memorial Day weekend marked the unofficial start of Summer 2012.

And, just like the rest of us, sun-worshipping celebrities began showing off their bronzed bodies on beaches all over the Northern Hemisphere.

Which stars have the hottest beach bodies? Which ones need to spend a little more time with their personal trainers?

Zac Efron: Nicole Kidman fessed up to peeing on The Paperboy actor. During a scene in the film Efron's character was stung by a jellyfish on the face. Nurses said that urine would ease the pain and Kidman shouted, "If anyone is gonna piss on him, it's gonna be me!"

Zac is rumored to be dating Lily Collins after the pair were spotted sneaking out of a Los Angeles restaurant together.

Famous beach bods PHOTOS

Ryan Lochte HardCore workout VIDEO; six-time Olympic medalist and World record 200 IM

Nicki Minaj Bikini PHOTOS - Nicola Furlong Japan Tribute; Hot 97 Summer Jam Dis

David Beckham H&M underwear VIDEO and Elle UK magazine Photoshoot