Naomi Watts, who plays Anne Darrow in King Kong, said the film had been a "wonderful experience".
Adrien Brody said it was wonderful that his character, Jack Driscoll, could be intellectual and heroic.
Jack Black also attended the UK premiere in London on Thursday night. He plays film-maker Carl Denham in the movie.
Billy Elliot star Jamie Bell said playing Jimmy in the film had been "brilliant".
Model Jerry Hall made it a family affair by bringing her 14-year-old daughter Georgia May...
...and big sister Elizabeth, 21, was also there to shine on the red carpet.
Director Peter Jackson stopped to sign autographs for fans who had queued for hours.
TV presenter Graham Norton was among the celebrity guests at the premiere.
Andy Serkis, who rose to fame as Gollum in The Lord of the Rings, said he loved doubling for King Kong while making the film.