Premiere of 'The Hangover Part II' at Grauman's Chinese theatre in Hollywood

Cast member Ed Helms poses at the premiere of "The Hangover Part II" at Grauman's Chinese theatre in Hollywood, California May 19, 2011.[Photo/Agencies]

U.S. Olympic snowboard gold medalist Shawn White poses at the premiere of "The Hangover Part II" at Grauman's Chinese theatre in Hollywood, California May 19, 2011.[Photo/Agencies]

Cast member Justin Bartha poses at the premiere of "The Hangover Part II" at Grauman's Chinese theatre in Hollywood, California May 19, 2011.[Photo/Agencies]