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Kristen Stewart
NEW YORK, NY - DECEMBER 12: Actress Kristen Stewart speaks onstage at "12-12-12" a concert benefiting The Robin Hood Relief Fund to aid the victims of Hurricane Sandy presented by Clear Channel Media & Entertainment, The Madison Square Garden Company and The Weinstein Company at Madison Square Garden on December 12, 2012 in New York City. (Photo by Larry Busacca/Getty Images for Clear Channel)

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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