The stars of the upcoming sci-fi film Avatar attended the movie's premiere on Wednesday evening in Hollywood.

Avatar director James Cameron and actors Sam Worthington, Zoe Saldana, Sigourney Weaver and Giovanni Ribisi were among them attendees.

See pictures of the premiere below:

Director

Director of the movie James Cameron and his wife Suzy Amis pose at the premiere of Avatar at the Mann's Grauman Chinese theatre in Hollywood, California December 16, 2009. The movie opens in the U.S. on December 18. REUTERS/Mario Anzuoni
Cast

Cast members Zoe Saldana (L), Sigourney Weaver (C) and Michelle Rodriguez pose at the premiere of Avatar at the Mann's Grauman Chinese theatre in Hollywood, California December 16, 2009. The movie opens in the U.S. on December 18. REUTERS/Mario Anzuoni
Actress

Actress Jamie Lee Curtis poses with her children Thomas and Annie at the premiere of Avatar at the Mann's Grauman Chinese theatre in Hollywood, California December 16, 2009. The movie opens in the U.S. on December 18. REUTERS/Mario Anzuoni
Cast

Cast member Sam Worthington and his girlfriend Natalie Mark pose at the premiere of Avatar at the Mann's Grauman Chinese theatre in Hollywood, California December 16, 2009. The movie opens in the U.S. on December 18. REUTERS/Mario Anzuoni