Our first preview of Spencer is here.

The upcoming Princess Diana film dropped an official trailer today, and it's a must-see. American actress Kristen Stewart stars as the Princess of Wales in the new movie coming out on Nov. 5.

Spencer: Watch trailer for Kristen Stewart Princess Diana movie

In Spencer, Stewart portrays Diana during Christmas with the Royal Family at Sandringham in 1991 — shortly before Charles and Diana separated.

Her marriage to Prince Charles has "long since grown cold," the trailer says, and the film is an "imagining of what might have happened during those few fateful days." Watch below!

Set to a cover of "Perfect Day" by Lou Reed, the one-minute preview contrasts the luxuries of the royal holiday with the struggles of an overwhelmed but resistant Princess Diana.

We also get a glimpse of actor Jack Farthing's portrayal of Prince Charles, along with a brief look at the cast playing the Royal Family.

Spencer premieres at the Venice Film Festival next month, before its theatrical release on Nov. 5. It's the new film from Oscar-nominated director Pablo Larraín, whose previous titles include No and the Jackie Kennedy biopic Jackie.