'Fifty Shades' movie casts Dakota Johnson, Hunnam

NEW YORK (AP) — The big-screen adaptation of E L James' "Fifty Shades of Grey" has cast its lead roles.

Charlie Hunnam will play the 27-year-old billionaire Christian Grey, and Dakota Johnson will play the college student he captivates, Anastasia Steele. Focus Features and Universal Pictures announced the castings Monday.

The 23-year-old Johnson is the daughter of actors Don Johnson and Melanie Griffith. She has had small roles in "The Social Network" and "21 Jump Street."

The 33-year-old British actor Hunnam starred in this summer's robot-monster battle "Pacific Rim." He stars in the FX series "Sons of Anarchy."

Directed by Sam Taylor-Johnson, the film is to be released next August.