Elvis Presley's favourite performance costume, the peacock jumpsuit, sold for $US300,000 ($A329,996) today, making it the most expensive piece of Elvis memorabilia sold at auction.
The online sale by auctioneer Gotta Have It! ended at 3am (1700 AEST). The pre-sale estimate was $US275,000 to $US325,000.
The white outfit with a plunging V-neck and high collar features a blue-and-gold peacock design hand-embroidered on the front and back and along the pants legs.
It is cinched at the waist by a wide belt decorated in gold medallions in a design resembling the eye of a peacock feather.
The auctioneer would describe the seller only as "a big Elvis collector" and declined to identify the buyer.
Elvis paid $US10,000 ($A11,000) to have the outfit made by Los Angeles designer Bill Belew, who created all of The King's stage wardrobe between 1968 and 1977. It captured the rock 'n' roll legend's fascination with peacocks as a good luck symbol, and the auction house said it was among his favourite Belew designs.
Elvis first wore the costume at the Forum in Los Angeles on May 11, 1974, and later for the cover of his album Promised Land.
The previous record for an Elvis collectible is $US295,000 ($A324,496) for his 1956 Lincoln Continental Mark II.
The most ever paid previously for one of his stage costumes, the so-called aloha cape, which was worn during one of his last television shows, was $US105,250 ($A115,773). Both were sold at a 1999 auction at Graceland run by Guernsey's.
