The official Buckingham Palace website updated its succession list on Thursday to include Prince Harry and Meghan Markle's children, who will now be formally known as Prince Archie and Princess Lilibet of Sussex. This follows a recent christening ceremony for Lilibet, during which Harry and Meghan referred to their daughter as Princess. Prior to the update, the children were listed as Master Archie Mountbatten-Windsor and Miss Lilibet Mountbatten-Windsor. However, the recent confirmation of Lilibet's christening as Princess Lilibet Diana at the Sussexes' home in Montecito, California, led to the official change in their royal titles. This update to the royal titles list is significant, as it acknowledges the importance of Harry and Meghan's children within the royal family.