A red sweater adorned with a flock of sheep worn by a young Princess Diana is expected to sell for more than $50,000 at auction.

The playfully patterned wool pullover featuring a single black sheep amid a pattern of white ones headlines Sotheby’s online Fashion Icons sale in September.

The 19-year-old Lady Diana Spencer was photographed in the garment at a polo match in June 1981, soon after her engagement to Prince Charles.

Some have speculated Diana liked the “black sheep” pattern because she felt like an outsider in the royal family.

The sweater has an estimated price of $50,000 to $80,000.

Online bidding opens Aug. 31 and runs to Sept. 14.

(The Associated Press)