It was a wild reunion for the cast of The Hangover at the premiere of the franchise's third installment in LA last night. Bradley Cooper broke from the NYC set of American Hustle to attend the big event alongside Ed Helms, and Zach Galifianakis. Newly-engaged member of the crew, Justin Bartha, was also on hand for the night of fun. The guys showed love for their costar Ken Jeong and the waiting fans, many of whom Bradley stopped to snap pictures with before heading into the screening. The ladies of the Hangover trilogy, including Heather Graham, Sasha Barrese, Gillian Vigman, and Jamie Chung all hit the red carpet as well to celebrate the film's Friday release. It'll be the first big holiday-weekend Summer movie matchup, since Fast & Furious 6 also hits theaters. If you can't decide which sequel to spend your money on, these pictures of Bradley Cooper looking hot in the Hangover Part III might help!