Cate Blanchett is attached to star in an authorized biopic of Hollywood legend Lucille Ball that Aaron Sorkin is set to write for Escape Artists, TheWrap has learned.

 The film will chronicle Ball's 20-year marriage to Desi Arnaz, with whom she starred on the classic TV sitcom "I Love Lucy." Ball had two children with Arnaz before they divorced in 1960. She married Gary Morton the following year.

Lucie Arnaz and Desi Arnaz Jr. will produce with Escape Artists, whose executive Jenna Block will oversee development of the project on behalf of the Sony-based company.