Princess Diana's wedding cake is the latest piece of royal memorabilia to be featured in an upcoming auction! Several news outlets have reported that on August 11, the fruitcake specially made for the late Princess of Wales' nuptials with Prince Charles is hitting the auction block— and it's not going to be cheap!

Diana's wedding cake has been preserved for 40 years

Princess Diana and Prince Charles got married at St. Paul's Cathedral back in 1981. That means as of July 29, their wedding cake will be 40 years old! The whole thing stood at 5 feet tall, weighing a whopping 225 pounds. Luckily, a slice has managed to stay preserved over the years thanks to its original owner, a woman named Moyra Smith. 

As Hello! reports, Smith lived at Clarence House, where she worked as part of the Queen Mother's household. After being given the slice of cake, she stored it in a special tin marked with the occasion. And the lucky bidder won't just be receiving the slice of royal history! Reports indicate that it comes with programs for both the wedding and the Royal Wedding Breakfast.

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The slice is expected to be sold for anywhere between £300 and £500. As Hello! mentions, this isn't the first time a piece of Princess Diana's ceremonial cake has been auctioned off! But while auctioneer Chris Albury mentioned that the cake "appears to be in exactly the same good condition as when originally sold," he does not suggest eating it.