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Pharrell Williams
MIAMI BEACH, FL - DECEMBER 07: Producer Pharrell Williams attends a private dinner celebrating Remo Ruffini and Moncler's 60th Anniversary during Art Basel Miami Beach on December 7, 2012 in Miami Beach, Florida. (Photo by Dimitrios Kambouris/Getty Images for Moncler)

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What Were They Thinking?!

December 15, 2012

This week's worst-dressed crew includes Katy Perry, Kristen Stewart, and Kim Kardashian. -- By Matt Whitfield, Yahoo! Staff