The bra was one of dozens of wardrobe items and other personal belongings that Spears put up for bid on eBay to raise money for victims of Hurricane Katrina, and bidding on the bejeweled undergarment had surpassed $60,000 before it was withdrawn on Saturday, eBay spokesman Hani Durzy said on Monday.
In a message posted on her official Web site, Spears, 23, told fans she was "concerned that some of you might be confusing this bra with something that it's not."
The message says eBay accurately described the bra as having been worn by Spears during a promotion for an HBO concert special, but "it is not the one I wore onstage during the 'Baby One More Time' performance."
"I feel the correct thing to do is remove this item from the auction because I don't want any of you to feel misled," she wrote. Spears did not explain how the confusion might have arisen.
Earlier during the auction, an eBay staffer had pulled the bra from the site after deciding that it violated company policy that bars listings for used underwear. But eBay executives later reversed the decision on grounds that the bra was really a piece of entertainment memorabilia, Durzy said.
Spears, who recently became a mother, has sold more than 60 million albums since she shot to fame in the late 1990s with her 1999 debut album "... Baby One More Time" and its hit title track, becoming a worldwide phenomenon at age 16.
With the subsequent albums "Oops! ... I Did It Again" and "Britney," Spears became the first female performer in the history of Billboard magazine to have her first three albums open at No. 1 on the U.S. pop charts.