The cake was sold online by Nate D Sanders Auctions of Los Angeles and was purchased still in its original presentation box.

The box features Prince of Wales feathers and a monogrammed CD along with a card which reads: "With best wishes from Their Royal Highnesses, the Prince & Princess of Wales."

Royal cake collectors have in the past purchased cakes dating to the days of Britain's Queen Victoria, who married in 1840. A slice commemorating the marriage of Princess Diana and Prince Charles, from one of 22 others distributed among royal staff, sold for £1000 six years ago.