Kristen Stewart says she doesn't know if she believes in ghosts, but felt Princess Diana's 'lingering energy' while filming 'Spencer'

• Kristen Stewart said she felt Princess Diana's "lingering energy" while filming "Spencer."
• Stewart told The Guardian she doesn't necessarily believe in ghosts, but felt Diana's presence.

Kristen Stewart said she felt Princess Diana's "lingering energy" while playing her in the biopic "Spencer," according to The Guardian.

Speaking to The Guardian's Charlotte Higgins in an interview published on Friday, the 31-year-old said: "I don't know if I believe in anything. I don't believe in ghosts, but I don't not believe in ghosts. I believe in a lingering energy."

She added: "I took her in, whether or not it was my idea of her or there was some actual literal remnant of her."

The film, which describes itself as "a fable from a true tragedy," depicts the royal family's Christmas vacation at Sandringham House in 1991 and chronicles the breakdown of Prince Charles and Diana's marriage. Stewart acts alongside 35-year-old actor Jack Farthing, who plays Charles.

Stewart told The Guardian that it was an unusual feeling, saying: "I guess it sounds kooky to start talking about stuff like this. But there wasn't a day that went by that I wasn't like: 'What does she think about this? I wonder if she can see me?'"

In 2019, Stewart told Vanity Fair that she talks to ghosts: "If I'm in a weird, small town, making a movie, and I'm in a strange apartment, I will literally be like, 'No, please, I cannot deal. Anyone else, but it cannot be me.'"

She added: "Who knows what ghosts are, but there is an energy that I'm really sensitive to. Not just with ghosts, but with people. People stain rooms all the time."

To get into character as Diana, The Guardian reports that the actress also used William Conacher, the same voice coach that Emma Corrin and Naomi Watts, actors who have previously portrayed the royal, worked with.

In October, the actress told InStyle that Diana's accent was "intimidating as all hell." Touching on this in her interview with The Guardian, she said: "It was like a full-body exercise - the most muscular, unintuitive, yet extremely instinctive thing. It was weird: I needed to master it in order to kind of mess it up."

Stewart has also spoken about the feeling she got while wearing costumes of Diana's clothing, telling Entertainment Tonight's Lauren Zima on Tuesday that wearing her replica wedding dress was a "spooky day."

The gown in question was designed by husband and wife duo Elizabeth and David Emanuel and featured a 25-foot-long train, the longest in royal wedding history.

"Spencer" premieres in theaters on November 5.