Diana, Princess of Wales is "one of the saddest to ever exist" as she gears up to play the Princess in a film.The Hunger Games star, 30, is taking on the role of Diana which is set during a weekend in the early 90s when the Princess of Wales discovered her marriage was breaking down.While production will not get underway until mid-January, Kristen has immersed herself into researching the late royal so she knows her "implicitly"."The accent is intimidating as all hell because people know that voice, and it's so, so distinct and particular.
I'm working on it now and already have my dialect coach," she told InStyle.She went on to say: "In terms of research, I've gotten through two and a half biographies, and I'm finishing all the material.
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