March 15, 2026, 12:20 PM EDT. Prince William shared a rare personal photo of his mother, Princess Diana, on the UK Mother's Day, highlighting their close bond despite her 1997 death. The image, from William's private collection, shows Diana playing with toddler William in a rose-filled field. William reminded the public of his mother's charitable work during a 2024 documentary, connecting her early lessons on homelessness to his own advocacy. The royal family also used Mother's Day to pay tribute to Queen Elizabeth II and Queen Camilla, reflecting on maternal legacies in the monarchy.