The project is already in the works for Apple, confirmed Variety. Mara is producing the biopic alongside Guadagnino as well.
Hepburn is a celebrated British actor who starred in Hollywood classics like Breakfast at Tiffany’s (1961), My Fair Lady (1964), Charade (1963) and Sabrina (1954). The actor is one of the rare few to have won an Emmy, Oscar, Tony and Grammy awards, the last of which she received posthumously, according to Variety.
Hepburn was also a UNICEF Goodwill Ambassador from 1989 to 1993 and is recognised for her humanitarian efforts and advocacy for children's rights in Africa, South America and Asia.
Fans are pretty excited about Mara being cast as Hepburn, calling it the perfect choice.