Charlie Hunnam, a cast member in “Sons of Anarchy,” arrives at a screening of the fourth season premiere of the television series, in Los Angeles. Focus Features and Universal Pictures announced Monday that Hunnam will play the 27-year-old billionaire Christian Grey in the big-screen adaptation of E.L. James’’ ““Fifty Shades of Grey”.” Dakota Johnson will play the college student he captivates, Anastasia Steele. (Photo credit: AP photo by Chris Pizzello, file)

The Associated Press

NEW YORK — 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 currently stars in the FX series “Sons of Anarchy.”

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