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Kristen Stewart

LOS ANGELES, CA - NOVEMBER 28: Actress Kristen Stewart attends the Variety Awards Studio held at a private residence on November 28, 2012 in Los Angeles, California. (Photo by Alberto E. Rodriguez/WireImage)

What Were They Thinking?!

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