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Miranda Lambert

LAS VEGAS, NV - DECEMBER 10: Singer Miranda Lambert arrives at the 2012 American Country Awards at the Mandalay Bay Events Center on December 10, 2012 in Las Vegas, Nevada. (Photo by Christopher Polk/ACA2012/Getty Images)

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