Prince Harry and Meghan Markle's son Archie Harrison Mountbatten-Windsor, 2, is already warming up to his little sister Lilibet Diana Mountbatten-Harrison if a new source report by US Weekly is to be believed. All anyone is talking about today is Harry and Meghan announcing the arrival of their daughter, who was born on Friday, June 4, at 11:40 am, to be exact."They are already back home in Montecito with their baby girl.