For some actresses, taking on the role of Princess Diana could come with a lot of pressure. After all, she was dubbed the People's Princess. But for Kristen Stewart, portraying the late Princess of Wales in Spencer makes her "stand at attention in the best way." Just as the world loved Diana, "I feel sort of the same way about her, and it happened really quickly," she said. "I was really young [and] didn't really know what was going on at that time. But now, it's hard not to feel protective over her." According to Deadline, the upcoming film covers a weekend in the early '90s when the royal knew her marriage to Prince Charles wasn't working and that she needed to carve her own path. The outlet reported the movie also won't cover Princess Diana's death but rather the fraying of her relationship with the Prince of Wales and her love for her children. Until the film's 2021 release date, fans can get their royal fix by watching The Crown.