Photo SpecialGrammys Best & Worst Dressed

Check out Gwen Stefani, Usher and other stars who hit fashion high notes – and some who were off-key – on the red carpet. By Serena Kappes and Beth Lipton

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Just call him Sgt. Pepper: Double-Grammy winner John Mayer (for his song "Daughters") misses the mark in a Beatles-inspired velvet blazer.