Royal Family Celebrates Prince William's Birthday with Sweet Tributes and Unseen Photos.

King Charles and Queen Camilla wished Prince William a happy birthday on social media with a never-before-seen photo of the father-son duo during a rehearsal for the King's coronation. The sweet photograph showed Charles smiling broadly at his son as William appeared to adjust the King's ceremonial robe. During the crowning ceremony, Prince William stepped forward as the Stole Royal and the Robe Royal were brought to King Charles, then the heir assisted bishops in putting the robe on the monarch.