Kristen Stewart on Being Viciously Protective of Princess Diana

Extras Jenn Lahmers talks to Kristen Stewart and director Pablo Larraín about their new movie Spencer. Kristen opens up about her preparation to play the role of Princess Diana in the film, which chronicles the days around Christmas 1991, when Diana decided to leave Prince Charles. Pablo also explains why he felt Kristen was the perfect choice for the part. Spencer hits theaters November 4.