The ever-iconic Bonham Carter is set to tackle the role of the queen's wild younger sister, Princess Margaret, following in the footsteps of Vanessa Kirby. Bonham Carter's list of screen credits is lengthy, with well-known roles in the Harry Potter franchise, movie musicals such as Les Miserables and Sweeney Todd, and, more recently, Ocean's 8. She also has previously played her new character's mother: she was nominated for an Oscar in 2010 for playing Queen Elizabeth the Queen Mother in The King's Speech.