The Party’s Over: ‘Hangover 3′ Bows With Bradley Cooper & Co

Bradley Cooper, Zach Galifianakis, Ed Helms, and Justin Bartha can skip the Advil — "The Hangover Part III" debuted not in a messy rager, but with maturity and style.

The final chapter in the comedy trilogy, directed by Todd Phillips, held a red carpet premiere Monday in Westwood, California, welcoming the original cast and famous supporters. While the stunning box office success of its sequel might add pressure to the forthcoming Memorial Day weekend opening, filmmakers and ticket holders laughed throughout the screening and into an after-party constructed on a nearby open lot.