Beyonce , Mariah Carey , Carrie Underwood, Ciara , Mary J. Blige perform on stage during the Conde Nast Media Group's Fifth Annual Fashion Rocks

Beyonce , Mariah Carey , Carrie Underwood, Ciara , Mary J. Blige perform on stage during the Conde Nast Media Group's Fifth Annual Fashion Rocks in New York City, September 5