The first teaser trailer for Diana, the forthcoming biopic of the late Princess of Wales, was released on Wednesday. Naomi Watts stars as the People's Princess in the role of a lifetime, which chronicles the final two years of the humanitarian's life.

The film explores Diana's private life in the wake of her divorce from Prince Charles -- from her secret love affair with Pakistani heart surgeon Dr. Hasnat Khan (Naveen Andrews) up to her tragic death in a Paris tunnel in August 1997 while trying to escape the paparazzi.

The film is based on the book "Diana: Her Last Love" by Kate Snell, which was based in interviews with some of Diana's close personal friends and confidantes.

"Diana" hits theaters in the UK on September 20, a date for a U.S. release hasn't been set.

Watch the first teaser below...