She was the most famous person in the world, the "people's princess", an icon.
And now a biopic, Diana, has been made about the last two years of her life.
It stars Naomi Watts as Diana, and looks at her campaign against land mines, her fame, and her relationship with surgeon Dr. Hasnat Khan (played by Naveen Andrews).
The movie is slated for Fall 2013 release.
Watch the just released trailer here...