Watch Diana: Last Days of a Princess for Free: How to Stream the Movie Online at 123Movies. . A film about the last weeks of the life of one of the most famous women of the twentieth century - Diana, Princess of Wales. The sudden and tragic death of Diana in August 1997 shocked the world as much as the assassination of President Kennedy. The tragedy, which occurred August 31, 1997 from the beginning was surrounded by many conflicting rumors and the most improbable assumptions.