The job of an actor isn’t easy, as they say! And such instances are enough to prove it on point when the actors undergo certain transformations and makeovers for a particular role in a film. Saying that here is how these top-notch Hollywood celebs prepped up for their roles in films. Starting from Jared Leto to Matt Damon and Matthew McConaughey, as mentioned in ET Online.

1. Jared Leto

Jared Leto, to play John Lennon’s murderer in Chapter 27, gained over 60 pounds.

2. Matt Damon

Matt Damon underwent a major weight transformation to play a role in the film The Informant. He gained over 30 pounds.

3. Matthew McConaughey

Matthew McConaughey went under some major weight transformations and lost several pounds for his film The Dallas Buyers Club, where he plays the role of an AIDS victim.