VIDEO : Diana, Our Mother: Your First Look at the HBO Documentary's Poster

Elle has reported that On Monday night on HBO, Prince William and Prince Harry will speak publicly for the first time about their relationship with their mother, Princess Diana, for a new documentary marking the twentieth anniversary of her death. Here, your first look at the poster for Diana, Our Mother: Her Life and Legacy. The touching image, rendered in black and white, shows Diana smiling serenely, while Prince Harry smiles mischievously by her side and a gleeful Prince William hugs his mother's neck. The photo was taken in the garden at Highgrove House to mark Prince Charles's fortieth birthday in 1988. In addition to discussing their private relationship with their mother, the princes, as well as some of Diana's closest friends, will delve into the Princess's philanthropic legacy and its impact on their own life and work as public figures. "Diana, Our Mother: Her Life and Legacy airs Monday, July 24 at 10 PM EST on HBO.