Bradley Cooper has admitted the success of The Hangover completely changed his life.
The Oscar-nominated actor starred with Ed Helms, Zach Galifianakis and Heather Graham in Todd Phillips' hit 2009 comedy about a wild stag party in Las Vegas. After becoming a box office smash it has spawned two sequels and led to a string of lead film roles for Bradley.
Speaking ahead of the release of The Hangover Part III, Bradley said: "The truth is, The Hangover sort of equally hit us all."
He pointed out it led to film studio Relativity Media's giving him the lead in his first major big-screen drama, 2011's Limitless, opposite Robert De Niro.
"If I had not been a part of a movie that was financially lucrative, there's just no way. And then, following the success of Hangover II, I don't think I could afford to do four movies where you just don't get paid that much."
His run of independent roles included Silver Linings Playbook, for which he earned an Academy Award nomination as best actor.
"We've also just learned about ourselves," Bradley said. "We've all grown a lot. There was the movie and then what happened with the movie, and then being about to go all over the world. I had never done that before... It's been a multi-faceted learning experience."