Bradley Cooper Talks' Bittersweet' Ending At 'Hangover 3' Premiere

May 21, 2013 AT 3:46 PM
It's the end of an era. The 'Hangover' guys are having their last drink in Vegas, and Bradley Cooper for one, thinks it's bittersweet. We chatted with the stars at the Los Angeles premiere of 'The Hangover 3.'