Photos of Bradley Cooper, Audrina Patridge, Ashley Olsen, Zac Efron at the LA Premiere of The Hangover

Celebs Come Out to Celebrate Bradley and Ed's Hangover

The stars of The HangoverBradley Cooper, Ed Helms, Justin Bartha, and Heather Graham — drew a large crowd to the red carpet for the LA premiere of their movie last night. Both Olsen girls came out to support Ashley's boyfriend Justin, though MK tried to keep a lower profile. The film's main characters shared their own hangover remedies, while Audrina Patridge was more interested in discussing the upcoming season of The Hills. Zac Efron, Kristen Bell, and Dax Shepard also stepped out for a night of laughs — check back in with Buzz this week to read her review before The Hangover hits theaters this Friday.

To see tons of more photos including Jim Carrey, Jenny McCarthy, Mary-Kate Olsen, and more, just read more.