Britney's Clothes Up For Bid

LOS ANGELES, Calif. -- Looking for a good way to "Break the Ice" with Britney Spears?

How about telling her you own some of her stuff.

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Personal clothing once worn by Brit are just a few of the items going up for bid in the Gotta Have It! online Rock & Roll Pop Art Auction.

Among the items is a T-shirt worn by the pop star long before two marriages, two kids and a divorce, back when she was a cast member on the "New Mickey Mouse Club."

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The shirt, which Brit had given to her grandmother, is also signed by her former "MMC" co-stars, including Justin Timberlake, Christina Aguilera and Keri Russell.

"Something like that has never come up for auction before. We expect it to go for between $15,000 and $20,000," Gotta Have It! owner Ed Kosinski told People.

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The shirt is also signed by Brit, inscribed with the message: "I love you grandma," according to E! Online's Marc Malkin.

Other items up for bid from Britney include outfits worn onstage during her "Drive Me Crazy" and "Oops, I Did It Again" tours, the orange coat and pants she donned for the 2000 Billboard Music Awards and even a blue and white Santa dress she wore for a holiday Pepsi ad that same year.

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Proceeds from the sale of the Spears memorabilia, which was provided by Tri Star Sports and Entertainment Group on behalf of the singer, will go to a charity of Tri Star's choosing, according to People.

But Britney isn't the only celeb with some goodies up on the block.

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More than 500 items will be auctioned off in the Gotta Have It! auction, including Madonna's personal diary from 1985, stage costumes and hand-written lyrics from the Material Girl, an authentic Elvis Presley jumpsuit and a pair of denim jeans worn by Marilyn Monroe in the movie "River of No Return."

The jeans had actually been given to Britney as a gift from designer Tommy Hilfiger - but now, they can be yours!

The Rock & Roll Pop Art Auction runs from July 21 - August 6.