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Stella McCartney
LONDON, ENGLAND - NOVEMBER 27: Stella McCartney attends the British Fashion Awards 2012 at The Savoy Hotel on November 27, 2012 in London, England. (Photo by Nick Harvey/WireImage)

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What Were They Thinking?!

November 30, 2012

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