For sale: a Mickey Mouse Club T-shirt worn by Britney Spears and autographed by fellow Mouseketeers Justin Timberlake and Christina Aguilera; Elvis Presley's favorite peacock jumpsuit; a handwritten draft of Bruce Springsteen's breakout hit, "Born to Run."

These celebrity relics are among about 500 items put up for auction by GottaHaveIt.com, a New York company that sells sports and entertainment memorabilia. GottaHaveIt estimates that the rock-'n'-roll-themed, for-profit sale will bring in as much as $1.5 million, chief executive officer Peter Siegel said in an interview. Online bids can be submitted through Wednesday, he said.

Presley's peacock jumpsuit, valued at about $325,000, attracted an initial bid of $250,000 this week, Mr. Siegel said. The white suit worn at 1970s concert appearances has a blue- and turquoise-colored peacock emblazoned on the chest and feathers along the legs.

"We expect that amount to go higher," Mr. Siegel said. "The frenzy really begins two days before the auction ends."

Also for sale, the blue jeans worn by Marilyn Monroe in River of No Return, a 1954 film that paired her with Robert Mitchum. Fashion designer Tommy Hilfiger, who paid $37,000 for them at a 1999 auction, gave the jeans to Ms. Spears as a gift, Mr. Siegel said.

Ms. Monroe's jeans are expected to fetch $65,000 to $75,000, Mr. Siegel said, and the estimate for the Mouseketeer shirt is $15,000 to $18,000.

Celebrity junkies can also bid on the jumpsuit Johnny Cash appeared in for a 1969 gig at California's San Quentin State Prison and slacks John Lennon wore in the Beatles film A Hard Day's Night.

Gotta Have It! Collectibles, the Web site's parent company, was started in 1994 by Mr. Siegel and then-partner Robert Schagrin. GottaHaveIt.com acquires celebrity souvenirs at auctions and estate sales and sells them for profit. The firm also helps private individuals build memorabilia collections.

Bloomberg News