"It must be tough for Charles, a man who waited over 70 years for the big gig, to play second fiddle to his son," Dunlop told the publication. The historian pointed out that "time and again recently, William has grabbed the headlines" rather than his father.

The Duke of Sussex made a new appearance in his latest Netflix documentary where he discussed father-son rivalry in polo.

Prince Harry reportedly just invited one royal family member to California for Christmas which could be very awkward for King Charles.