Pictures of Zac Efron, Elizabeth Moss, Jonah Hill, Vanessa Hudgens, Russell Brand, and Jon Hamm at Get Him to the Greek

Zac and Vanessa Join Russell, Diddy, and Jonah's Big Greek Premiere

The stars of Get Him to the Greek appropriately gathered at LA's Greek Theater last night for their latest premiere after a screening in Las Vegas last week. The movie doesn't open until June 4, but Russell Brand was already in the rock star spirit, donning all white to hit the red carpet with his fiancee, Katy Perry. Russell recently shared the romantic story of his proposal to Katy, and another cause close to his heart is a new documentary he's working on about the state of consumer society. He was joined by his costars Diddy and Jonah Hill, with fans like Jon Hamm and Zac Efron coming along to see the funny film. Zac posed for photos with Vanessa Hudgens, who had a solo turn in front of the cameras earlier this week when she attended Victoria Beckham's LG party.

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Source: WireImage, Getty