Pop star Mariah Carey has chosen who will be her Luscious Pink personal dress designer -- and ET stylist Anya Sarre has the exclusive.

To celebrate the launch of her new fragrance, Mariah Carey's Luscious Pink, Mariah gave the ultimate design challenge to her fans - design a pink dress for her to wear that captivates the essence of her perfume.

The winning dress design will be produced three times - one for Mariah to wear, one for the designer to wear and the other to be auctioned off to benefit Susan G. Komen for the Cure.

Mariah shares her scent, Lucious Pink, with Anya and reveals who won -- and where she plans to wear her new custom-made dress!