The 57-year-old actress who starred in the Aliens movies, will be working with the Canadian director in his upcoming movie, Avatar.
Filming of this 3D production will begin in April. It will be in theatres in 2009.
Cameron worked with Weaver in Aliens, and commented on his choice of actress, "Sigourney and I have always looked back fondly on our collaboration in Aliens, and we’re excited at the prospect of working together again."
The director sees many strengths in Weaver. "She has a unique blend of strength, sensitivity and intelligence needed to play the character of Grace, and she has a special significance for fans of science fiction."