Mariah Carey auctioning dress for charity

Singer-actress Mariah Carey is auctioning a dress that was designed for her by a fan on eBay site to raise money for a breast cancer charity.

The "Hero" singer has put a pink, fishtailed asymmetric frock onto the auction website. The gown was created by Julian Contreras as part of a competition where the singer asked fans to design a dress inspired by her Deicious Pink fragrance. It is one of only three in existence, reported

Mariah was last seen wearing the dress for a dinner date with husband Nick Cannon in California in April.

The close-fitting dress will be listed until May 30.