Congratulations are in order for Prince Harry and Meghan Markle! The couple just welcomed their second child together, a baby sister for their son Archie, and she has the perfect name! On Friday, Harry and Meghan welcomed Lilibet “Lili” Diana Mountbatten-Windsor at Santa Barbara Cottage Hospital in California – weighing in at 7-pounds, 11-ounces – and both mom and baby are “healthy and well, settling in at home.” And after plenty of guesses, we now officially know the name they’ve chosen for their baby girl, which has a special meaning. The baby’s first name honors Queen Elizabeth II –in case you didn’t know, her nickname is Lilibet, since that’s how she said it herself when she was too young to pronounce her own name. Lili’s second name pays tribute to another person very close to Harry, his late mother Princess Diana. Kate Middleton and Prince William are among the first Royals to react to Lili’s arrival – and they’re “delighted.” They’ve taken to Twitter to congratulate Harry, Meghan and Archie. And in a statement, a Buckingham Palace rep says the Queen, Prince Charles, and Duchess Camilla are also “delighted with the news.” I just love her name, don't you? I think it's perfect!