A Piece of Princess Diana’s Most ’80s (And Instagram Famous) Off-Duty Look Is Going Up for Sale

A British Lung Foundation sweater, jeans, cowboy boots, and a blazer on top—it’s one of Princess Diana’s most famous off-duty looks. And now, a checked Turnbull & Asser blazer, believed to be worn by the royal at the Guards Polo Club in Windsor in 1988, is going up for auction.

David Quelch, the former managing director of Burberry, reportedly gave the blazer (valued between £300 and £500, or $380 to $640) to his assistant in 1997 upon his retirement—explaining at the time that the piece had been sent in by Diana as she had wanted it to be remade in a different fabric.

Unfortunately, though, it’s not possible to prove for certain it’s the exact jacket the Princess wore. “Upon close examination, the Turnbull & Asser blazer consigned for sale is identical to the one Diana, Princess of Wales, is famously photographed wearing,” Lucy Bishop, an auctioneer at Kerry Taylor Auctions, tells Vogue. “However, as the blazer is ready-to-wear, it means more than one would have been made. We are laying all the evidence gathered fairly on the table, and allowing those bidding on the day to decide what they choose to believe.”