​​It's official: Lilibet Diana Mountbatten-Windsor is a red head! Prince Harry and Duchess Meghan of Sussex on Monday released a new picture of their second child, who turned 1 on June 4 while she was in London with her parents and older brother Archie, 3, for great-grandmother Queen Elizabeth II's Platinum Jubilee celebrations. According to the announcement from the Sussex office in California where they now live, the baby's birthday party was celebrated at a casual backyard picnic with a few close friends and family at Frogmore Cottage, the Sussex's home on the Windsor Castle estate when they are in the United Kingdom. Up until now, few glimpses of Lilibet have been offered by her parents. Baby Lili, as she is called, is named for her great-grandmother, the queen, whose childhood nickname was Lilibet. She was born in Santa Barbara, California, near her parents' estate in Montecito, and as such is the first royal heir relatively close to the throne (she is eighth in line after her brother and father) to be born an American citizen. 📸: @misanharriman, @gettyimages