Nicole Kidman in The Hours You'd be surprised what celebs will do for their "art".

Usually so preened and perfect...

Stars are sometimes willing to forsake their shiny, polished appearances for the sake of a movie role.

A specific film character will make actors do what wild horses couldn't otherwise achieve, in the name of pulling a part off realistically.

While Hollywood actresses wouldn't dream of going out without every last inch of their slap in place in real life, they don't bat an eyelid at uglying up on screen.

Take Nicole Kidman, who transforms herself almost beyond recognition with a fake hooter in The Hours.

Renee Zellweger, meanwhile, famously piled on the pounds as Bridget Jones, while Lindsay Lohan recently got herself a baby bump and Angelina Jolie boosted her boobs.

All in the name of acting, darling...

Click on the gallery below to see the shocking lengths stars will go to in transforming themselves for movie roles.

Hilarious viewing guaranteed.