One of the largest collections of Princess Diana’s items is coming up for auction on June 26—and there’s a good chance that her sons Prince William and Prince Harry will be tempted to bid on them, an expert said.There are over 300 items on the auction block, from the former Princess of Wales’ dresses to shoes to handbags.The Prince of Wales and the Duke of Sussex even make it into the auction in the form of numerous holiday cards of Diana’s family signed by the royal herself.

Later this month, over 300 items from the late Princess Diana’s collection—everything from clothing to shoes to handbags to personal cards and letters—will go up for auction. The question has to be asked: will her sons Prince William and Prince Harry privately bid for any of their late mother’s items?

It’s very possible, said Martin Nolan, executive director and co-founder of Julien’s Auctions, which is putting on the sale on June 26 at 10 a.m. PST at The Peninsula Beverly Hills.

Princess Diana, Prince Harry, and Prince William at Eton in September 1995.

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Speaking on Hello!’s “A Right Royal Podcast,” Nolan said, “I would expect that they are tempted and expect that they do and expect they have representatives who buy on their behalf.”

“And that’s understandable,” he added. “I would, too.”

Some of the items are deeply personal pieces from the former Princess of Wales’ collection. “You see the ski suit and the great photographs of them or the shoes that she wore when she went to the dinosaur exhibition at the Museum of Natural History here,” Nolan continued. “You know, like all of those, they’re memories for them. It’s their mum. She’s the most famous person in the world, but of course they would love to own some of these and preserve them for their own memories.”

Princess Diana, Prince Harry, and Prince William.

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Princess Diana at the Victor Chang Cardiac Research Institute Dinner Dance in Sydney, Australia in November 1996.
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In total, there are 325 items in the auction, called Princess Diana’s Style & A Royal Collection—including Diana’s famous Lady Dior bag, her iconic Caring Dress designed by Bellville Sassoon, the hat she wore as she departed for her honeymoon with Prince Charles in 1981, and multiple handwritten notes.

William and Harry even make it to the collection themselves in the form of a signed holiday card featuring a photo of the two with their parents from 1989 and a signed photograph of Diana with her two sons from 1990, among other photographs of the Wales family from yesteryear.