08/08/2013 09:41 BST

Fab To Flab: 12 Celebs Who Lost Their Six Packs (PICTURES)

Super fit Olympian Louis Smith may have eased up on the gym routine, but he's by no means the only celeb to have swapped weights for plates of food and let his buff physique soften up.

Remember how ripped Val Kilmer used to look? Well, he doesn't quite look like that these days. And Kevin Federline has undergone rather a transformation since splitting from Britney Spears. And even the now-fitness-obsessed Peter Andre once eased up on those stomach crunches.

So if you think maintaining a showbiz bod is easy, here's 12 celebs who prove otherwise...

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