Why is Madonna disputing the auction of these items?

Madonna is fighting back after an ex-boyfriend is putting her satin underwear up for auction.

The singer is seeking to stop the sale, citing DNA as a reason why.

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The auction house is also trying to sell several of Madonna's other personal items, including a used hair brush with strands of her hair still in it.

The belongings were given to the auction house by Darlene Lutz, who was once close with the star.