'Twilight' star Kristen Stewart is all set to play the role of Diana, Princess of Wales in an upcoming film. Directed by Pablo Larrain, the film will be titled 'Spencer'. According to reports, the biopic will be set in the 90s and will focus on the relationship between Diana and her husband Prince Charles and her love for her children, Harry and William. The production for this much-speculated film will start in early 2021.