Watch: Prince William, Kate Middleton's Annual Income Revealed in ReportIt's safe to say "jokester" can be added to Kate Middleton's titles. The Princess of Wales was greeting well-wishers after attending the royal family's annual Christmas church service at Sandringham when a potential mishap turned into a lighthearted moment. While chatting with a member of the public who had gathered at the royal family's private estate in Norfolk, as seen in a video published by The Sun, a loud cracking sound came from a few people down.