Charles and Diana wedding cake slice sold for £828

Prince Charles and Princess Diana married in 1981

A 33-year-old slice of cake from Prince Charles and Princess Diana's wedding has been sold for $1,375 (£828).

The cake, which was still in its original box, was sold online by an American auction house.

The box contains a card from the 1981 wedding, which reads: "With best wishes from Their Royal Highnesses, the Prince & Princess of Wales."

A spokesman from Nate D Sanders Auctions in Los Angeles said the buyer was a private collector.

The cake was still in its original presentation box

Sam Heller said there was a dedicated group of royal cake collectors.

Some have bought cakes dating back to the days of Queen Victoria, who married in 1840, he said.

In April, a slice of cake from the Duke and Duchess of Cambridge's wedding sold at auction for £420.