NEW YORK - The big-screen adaptation of E L James' erotic novel "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" as Jax Teller.
Directed by Sam Taylor-Johnson, the film is to be released Aug. 1, 2014.
The casting of Johnson and Hunnam ends months of speculation about who would play the lead roles in the adaptation of the first book.
The trilogy has sold 70 million copies worldwide in e-book and print, making the romances one of the fastest selling book series, according to the Los Angeles Times.