The military-style jacket that Janet Jackson wore during her 1990 Rhythm Nation tour has sold for $US81,250 ($A104,491) at a Beverly Hills auction, more than 20 times its pre-sale estimate.
The Rhythm Nation cropped black jacket with metal hardware was one of the highlights of a three-day sale of stage costumes and other memorabilia amassed over four decades by the singer.
The tour was her first as a headline solo artist.
Julien's Auctions said the jacket had been expected to sell for $US4000-$US6000. The buyer was not disclosed.
A prototype of the same jacket went for $US21,875.
The five-time Grammy winner, who turns 55 on Sunday, is selling more than 1000 of the costumes she wore on stage, on tour, on red carpets and in music videos.
A single hoop earring with a key that she wore on tour in 1990 and at multiple other appearances was bought on Friday for $US43,750.
The singer's most famous outfit - the black leather bustier that was ripped, briefly exposing her breast at the 2004 Super Bowl halftime show - is not included in the auction.
A portion of the auction proceeds will go to the Christian child sponsorship group Compassion International.
The sale concludes on Sunday.
Australian Associated Press