A mentally challenged girl proves herself to be every bit as capable as her "perfect" sister when she moves into an apartment and begins going to college.
The Other Sister is a 1999 American romantic comedy-drama film directed by Garry Marshall and stars Juliette Lewis, Giovanni Ribisi, Diane Keaton and Tom Skerritt. The film was written by Marshall and Bob Brunner. Malia Scotch Marmo did uncredited rewrites to the script.