Actress Kristen Stewart, who portrays Princess Diana in the new biographical drama film 'Spencer', says it was a nerve-wracking experience, and the anxiousness led her to develop a pain in her jaw. Stewart told BBC News: "I had TMJ (her jaw stayed shut) to the point where I was like, completely locked up. I was like, 'Huh, I guess I'm really nervous' - I was really tripping out until we started." Spencer: Kristen Stewart Reveals Why She Felt ‘Disloyal’ Playing Princess Diana.

She shared that she didn't actually know a huge amount about the Royal Family before she accepted the role, reports femalefirst.co.uk. Stewart said: "I didn't have the most developed or defined relationship with the Royal Family in generally. I didn't grow up following the sort of saga. Obviously I do live on planet earth, and her impact was so immense and emotional, even for somebody who was seven when she passed away."

Stewart did a lot of research before she started shooting the new movie. The actress even took to watching 'The Crown' as part of her preparations for the role. She said: "I read everything, I wanted every photo ... watched all the interviews that I could get my hands on. "I watched 'The Crown', I watched every iteration of interpretation. I just tried to absorb her in an emotional and general way, and then trust the process, and expect her to show up." Spencer Trailer: Kristen Stewart Is Perfection As Princess Diana Trapped in a Loveless Marriage With Prince Charles (Watch Video).

She also felt a need to "protect" the late Princess. The actress added: "I had to just not focus on other people's idea of her, and really focus on my own. And that in itself was just so distinct and specific to me."

(The above story first appeared on LatestLY on Oct 12, 2021 02:09 PM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).