Fashion Rocks 2007

Tyra Banks arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007. The star-studded concert, honoring the extraordinary relationship between fashion and music, kicks off New York's Fall Fashion Week. CBS is airing performances from the concert Friday, Sept. 7 at 9 p.m. EDT.

Host Jeremy Piven arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Violinist Miri Ben-Ari performs at Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

Sophia Bush arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Mischa Barton arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Fashion designer Michael Kors arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Fashion designer Tommy Hilfiger and his girlfriend Dee Ocleppo arrive at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Russell Simmons arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Anna Wintour and fashion photographer Patrick Demarchelier arrive at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Steve Tyler of Aerosmith performs at Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

LeAnn Rimes arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Jennifer Lopez performs at Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

Lindsey Buckingham of the band Fleetwood Mac arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Carlos Santana performs at Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

Alicia Keys and Carlos Santana perform at Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

Ashlee Simpson arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Teri Hatcher is joined by fashion designers Mark Badgley, left, and James Mischka, right, at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007. The gown Hatcher is wearing was created by the duo.

Mary J. Blige and Usher perform during Conde Nast's Fashion Rocks concert at Radio City Music Hall in New York, Thursday, Sept. 6, 2007.

Nicole Richie arrives at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.

Hip-Hop artists, from left, 50 Cent, LL Cool J, and Ludacris arrive at the fourth annual Fashion Rocks concert at Radio City Music Hall, presented by Conde Nast Media Group, in New York, Thursday, Sept. 6, 2007.