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Heiei Klum

FRANKFURT AM MAIN, GERMANY - NOVEMBER 11: Heidi Klum attends the MTV EMA's 2012 at Festhalle Frankfurt on November 11, 2012 in Frankfurt am Main, Germany. (Photo by Mike Marsland/WireImage)

What Were They Thinking?!

This week's worst-dressed crew includes Britney Spears, Jennifer Lawrence, and Jennifer Aniston. -- By Matt Whitfield, Yahoo! Staff