The ceremony took place on Saturday in London, England.
The Princess of Wales looked every bit the royal at the coronation.
Prince Harry wore a morning suit to King Charles III's Coronation.
The two were married from 1973 to 1995.
With her grandfather on the throne, Charlotte is now third in the line of succession.
King Charles' milestone day in history did not go without its critics.
Charles and Camilla were officially crowned king and queen during a three-day celebration.
The young royal is the youngest future king to have a role at a coronation.
Prince Harry was all smiles as he entered Westminster Abbey.
The royal couple traveled from Buckingham Palace to Westminster Abbey in the Diamond Jubilee Coach.
The event, marking the official moment Charles is crowned king, takes place May 6, 2023.
Celebrities and British royalty were out in full force for King Charles' coronation ceremony.
Learn more about all the royal regalia that will be on display during Saturday's ceremony.
See all the silly and serious faces caught on camera!