Royal wedding cake slices up for auction

Fancy a bite of royal wedding cake?
Fancy a bite of royal wedding cake?

Royal weddings have always generated a lot of interest, and now royal enthusiasts can get a real taste of the action, when a number of royal wedding cake slices go up for auction.

Five slices of cakes from different British royal weddings will be auctioned off to the highest bidders later this month, as part of the sale coming from the estate of Queen Elizabeth II's former chauffeur, Leonard Massey.

The slice with the highest estimate -- $2,000 – is, perhaps unsurprisingly, from Prince Charles and Princess Diana's iconic wedding of July 29, 1981. There is also a slice of the Duke and Duchess of Cambridge's brandy-infused fruit cake from their 2011 wedding, which has an estimate of $600 to $800.

Read MoreUK'sPrince George racks up nearly 800 presents

A slice of cake from 2011 Royal wedding of Prince William and Kate Middleton
Credit: Julien's Auctions

The oldest piece is from Princess Anne and Captain Mark Phillips' wedding in November 1973, which is "not suitable for consumption," according to the Beverley Hills-based auction house, Julien's Auctions, which will host the sale.

The final two slices are from Prince Andrew and Sarah Ferguson's 1986 wedding cake, and Prince Charles and Camilla Parker Bowles's 2005 wedding.

Read MoreBrands benefiting from the 'Kate Middleton effect'

If history is anything to go by, these little tastes of the royalty could beat their estimates.

Last December, Julien's Auctions sold a slice of cake from the Duke and Duchess of Cambridge's 2011 wedding for a whopping $7,500, beating expectations of between $1,000 and $2,000.

A slice of cake from 2005 Royal wedding of Prince Charles and Camilla Parker Bowles
Credit: Julien's Auctions

Royal memorabilia of any kind often generates significant interest, with the infamous "Travolta" dress worn by the late Princess Diana selling for £240,000 ($365,315) in March 2013.

President and CEO of Julien's Auctions, Darren Julien, told CNBC he was "very excited" about the upcoming auction.

"It's the first time that all five cakes from the past five royal weddings have been up for auction at one time, and the first time that some of the royal cakes which represent the weddings have ever been sold. It's a royal flush," he said.

The five slices are currently on display at The Stafford hotel, in London and will be transported to Beverley Hills, California for auction on June 27.

Read MoreRoyal baby boost to UK economy? Only if it's a girl