Zac Efron and other stars turned up for Hollywood premiere of The Hangover

Former NHL hockey player and current coach Wayne Gretzky (L) poses with his daughter Paulina Gretzky at the Los Angeles premiere of the film "The Hangover" at the Grauman's Chinese theatre in Hollywood, California, June 2, 2009.　[Agencies]

Cast members Justin Bartha (L) and Ed Helms greet each other at the Los Angeles premiere of the film "The Hangover" at the Grauman's Chinese theatre in Hollywood, California, June 2, 2009.　[Agencies]