"In this photo made available by Kensington Palace from the personal photo album of the late Diana, Princess of Wales, shows the princess holding Prince William whilst pregnant with Prince Harry, and features in the new ITV documentary 'Diana, Our Mother: Her Life and Legacy.' Prince William and Prince Harry will pay tribute to their mother, Princess Diana, as the 20th anniversary of her death in a car crash approaches in a TV documentary ""Diana, Our Mother: Her Life and Legacy"" which will air Monday July 24, 2017 on British TV. (The Duke of Cambridge and Prince Harry/Kensington Palace via AP)  NO USE ON THE FRONT COVERS OF ANY UK OR INTERNATIONAL MAGAZINES. NO COMMERCIAL USE (including any use in merchandising, advertising or any other non-editorial use including, for example, calendars, books and supplements)."
{}