Stewart is best known for her roles in films such as “Twilight” and “Panic Room.”
However, she’s no stranger to biopics.
She previously portrayed rocker Joan Jett in the 2010 movie “The Runaways” (viaIMDb).

“There were moments where my body and mind would forget she was dead.”
“I felt some spooky, spiritual feelings making this movie,” Stewart said.
“I felt like there were moments where I kind of got the sign-off.”

Meanwhile, Stewart says that she can relate to Princess Diana’s life for one big reason.
“The attention is something I can see a parallel in,” she said.
“It’s feeling constantly watched, no matter what you do.
If you’re in public, someone in the room is looking at you at all times.
That is a feeling you only have if you’re extremely famous.
It’s a completely different approach to being a human.”
“It is weird to inhabit a space where people are disappointed in your choices,” she said.
But I’m not a figurehead.
People choose their role models.
But I’m not trying to be one."