Celebrity chameleons: Stars going the extra mile for their new movie roles

GALLERIES

Celebrity chameleons: Stars going the extra mile for their new movie roles

Brad Pitt seems to undergo transformations for every movie he does.

He became a blood sucker for the film Interview with the Vampire and was unrecognisable as an old man in The Curious Case of Benjamin Button.

The heart-throb is currently filming World War Z, in which he interprets an author who scours the world collecting the stories of survivors after a worldwide zombie epidemic