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Princess Diana, Dress Auction

Courtesy: Julien's Auction

We may never be royals, but we can snag some of their goods.

Royal fashion enthusiasts will have the chance to bid on several of the late Princess Diana's gowns when they go to auction this December at Julien's Auctions in Beverly Hills. And if that slice isn't enough for you, then maybe a piece of Kate Middleton and Prince William's wedding cake—also for sale—will satisfy your appetite. But first, the regal designs (and 3-year-old cake) hit the Today show to offer viewers a quick preview of the drool-worthy duds.

Prince William, Duchess Catherine, Kate Middleton, Wedding Cake

Courtesy: Julien's Auction

Diana's beaded, off-the-shoulder Catherine Walker design is expected to fetch a healthy $60,000 to $80,000 during auction. Worn by the princess on two occasions, the delicate blush gown embodies all the elegance that defined Diana's iconic style.

Also on the market is an ivory Zandra Rhodes dress with a delicate, lacy bodice and beaded embellishments that Di wore back in 1987. A chic color-blocked, black-and-white number will also be up for grabs, along with a merlot Caroline Charles coat-dress with classic '80s puffed sleeves.

Rounding out the enviable dresses, Diana's emerald, silk georgette Catherine Walker gown from a 1993 state dinner is expected to bring in a pretty penny for the auctioneers.

Prince William, Duchess Catherine, Kate Middleton, Wedding Invitation

Courtesy: Julien's Auction

And that's not all, folks—a slice from Will and Kate's exquisite wedding cake will go to the highest bidder for an estimated $1,000 to $2,000. Crafted for the royal couple's nuptials back in 2011, the slice may actually be more delectable than ever according to Martin Nolan, executive director for Julien's Auctions, who weighed in that fruit cakes taste best at around 30-months-old (we'll just have to take his word for it). Nolan also explained that Kate kept the top three tiers of the cake for herself, serving the top layer during Prince George's christening. And now, it seems the second tier will soon be served after royal baby number two arrives!

Last up, bidders will have the chance to take home a blank invitation to Will and Kate's wedding, printed on Queen Elizabeth II's personal stationary.

If you've got a spare $1,000 (or $80,000), head down to Julien's Auctions on Dec. 5 and 6 to get in on the royal goods!

(Today and E! are both part of the NBCUniversal family.)