What's the significance behind the name of Harry and Meghan's newborn daughter?
The Duke and Duchess of Sussex welcomed their second child, Lilibet Lili Diana Mountbatten-Windsor, on Friday. Prince Harry and the former Meghan Markle announced the news of the birth of their first daughter on Sunday. She was born at Santa Barbara Cottage Hospital in Santa Barbara, California, weighing 7 pounds and 11 ounces. One name to honor two generations of royal women. Getty Images  The Queen, The Prince of Wales and The Duchess of Cornwall, and The Duke and Duchess of Cambridge have been informed and are delighted with the news of the birth of a daughter for The Duke and Duchess of Sussex," Buckingham Palace said in a statement shared with TODAY. Her name pays homage to two women of the royal family. In a statement, the couple said, Lili is named after her great-grandmother, Her Majesty The Queen, whose family nickname is Lilibet. Lilibet was a nickname given to Queen Elizabeth II when she was a child because she wasnt able to pronounce her full name. The sweet nickname was documented in a letter sent by the queen (then, Princess Elizabeth) to her grandmother, Queen Mary. A photo of the letter was shared on the official royal family Twitter account in April 2016 in honor of the queens 90th birthday. Darling Granny, thank you very much for the lovely dolls house, the letter read. I do love it, and I have unpacked the dining room and the hall. Love from Lilibet xxx.  The first letter Princess Elizabeth, 'Lilibet' to her family, ever sent to her grandmother, Queen Mary #Queenat90 pic.twitter.com/ElqORaWHEs  The Royal Family (@RoyalFamily) April 19, 2016  Prince Philip, Duke of Edinburgh, who died on April 9, was known to use the nickname as a term of endearment for his wife. Combine "lily" and "bet" and you have "Lilibet," with stronger emphasis taking place on the first "li" rather than the second. A name honoring two generations of royal women  Lili's middle name, Diana, pays tribute to Harrys mother, the late Princess Diana who died in a car crash in August 1997. Prince Williams daughter, Princess Charlotte, has both Elizabeth and Diana as her middle names as well. Harry and Meghan also have a son, Archie, who turned two last month. Like her older brother, Lili's last name is also Mountabatten-Windsor. The family name comes from Prince Phillip's surname (Mountbatten) and the name Queen Elizabeth II's grandfather, King George V, took on after Windsor Castle in 1917. The couple announced that they were expecting their second child on Valentines Day, which shares a special connection to Princess Diana. Harry's parents announced that they were expecting him 37 years ago on the same exact day. In a message from the couple on the official Archewell website, they said, "On June 4th, we were blessed with the arrival of our daughter, Lili. She is more than we could have ever imagined, and we remain grateful for the love and prayers weve felt from across the globe. Thank you for your continued kindness and support during this very special time for our family.