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Jennifer Lopez

MELBOURNE, AUSTRALIA - DECEMBER 11: Jennifer Lopez poses at a press call at Rod Laver Arena on December 11, 2012 in Melbourne, Australia. (Photo by Graham Denholm/WireImage)

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