At a Sotheby's auction in New York, Princess Diana's sweater, showcasing a black sheep amidst a sea of white ones, has been purchased for $1.14 million (£920,000).
Bidding opened 31 August, and the top bid stayed under $200,000 (£161,000) until the auction's final minutes.
Sotheby's had estimated the value of the "sheep jumper" at $50,000 to $80,000 (£40,300 to £64,500).
It did not disclose the identity of the winning bidder.
The simple piece of knitwear, which was unearthed in an attic in March, commanded a higher price than many other objects tied to the "People's Princess" that were sold at auctions in recent years.
Diana's car, a Ford Escort, maybe the closest, going for $806,000 (£650,000) in 2022.
The amethyst-bedecked Attallah Cross that Diana frequently wore was sold to reality star Kim Kardashian for roughly one-fifth of the sweater's amount – $203,000 (£163,800) – at an auction in January.
The sweater's design is often described as symbolic of Diana's place within the royal family.
But fashion historians believe Diana was not sending a message, as she may have done in later years with her famous "revenge dress", when she wore the sweater in 1981, a month before her wedding to then Prince Charles. Instead, many say Diana was simply sporting the "Sloane Ranger" style she helped popularise.
In the era before social-media influencers, newspaper photos of Diana in the sweater gave its maker, Warm and Wonderful knitwear, a "stratospheric launch" and inspired copycat designs, according to Sotheby's.
After her wedding, Buckingham Palace corresponded with Warm and Wonderful, indicating that the sweater had sustained damage and requested either a repair or a replacement. Princess Diana subsequently donned the replacement sweater at another polo match in 1983.
Included in the auction lot by Sotheby's were the correspondence to Warm and Wonderful, which encompassed both the letter seeking repairs and a thank-you note for the replacement. Additionally, the small hole in the sweater was utilized as a means to verify its authenticity.