Princess Diana: she"s one of the most captivating personalities of our time. From her fairy-tale wedding to Prince Charles through her tragic death in Paris, people all around the world have taken her story to heart. Now, NBC News presents a remarkable feature-length documentary with exclusive video that reveals a Diana we have never seen before. During the darkest days of her marriage, the princess went to London voice coach Peter Settelen, for tips on improving her public appearances. Settelen turned on his video camera to help coach Diana, but got much more: startling confessions from the princess as she spoke candidly and casually about her failed relationship with Prince Charles and her need to do more with her life. Here for the first time, she speaks openly about her personal life with the prince, her strained relations with his family, and the woman Diana says was always there in the background: Camilla, now Charles" second wife. "Diana Revealed" is must-viewing for anyone who cares about the princess, and the struggles and triumphs of her all-too-short life. Bonus Feature: "Diana"s Legacy" When Diana passed away, millions of mourners from across the globe sent money to her family and friends, asking that the princess" world-renowned charity work continue. In rare interviews, Diana"s close friends and her long-time butler Paul Burell talk about how they turned the pain of those days into progress -- creating The Princess of Wales Memorial Fund.