Brie Larson has signed on for Joseph Gordon-Levitt's directorial debut, Don Jon's Addiction, Variety reports. She joins Scarlett Johansson, Tony Danza and Gordon-Levitt himself in the cast.

Also writing the project, Gordon-Levitt stars as a present-day Don Juan who undergoes a quest to become a better person.

Larson, who will play the sister to Gordon-Levitt's character, has appeared on the big screen in films like Scott Pilgrim vs. the World and, most recently, 21 Jump Street. She can be seen coming up in The Spectacular Now and Squirrels to the Nuts.

(Photo Credit: Brian To/WENN.com)