Britney Spears has started an online charity auction and is offering a plethora of memorabilia, including more than 50 costumes she has worn in concert appearances, video clips, and films.

Britney Spears has started an online charity auction and is offering a plethora of memorabilia, including more than 50 costumes she has worn in concert appearances, video clips, and films. The auction is being held at GottaHaveIt.com through June 5.

Other lots for bid include personal experiences with Spears. Sitegoers can bid for the opportunity to meet the artist on the set of a video shoot or attend the Britney Spears Camp for the Performing Arts. All proceeds from the auction will benefit the Britney Spears Foundation, an organization the artist founded to help children in need.

Among the costumes up for auction are the green bra top and miniskirt worn by Spears during her 2001 MTV Video Music Awards performance. Other items up for bid include four seats to a show on Spears' next tour, along with soundcheck party passes and a chance to meet the artist, book reports the artist wrote in junior high school, and the ears she wore as a cast member on "The Mickey Mouse Club."

The auction began yesterday (May 22), but at deadline, GottaHaveIt.com was unavailable. For more information on the auction or the Britney Spears Foundation, visit the organization's official Web site.