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Kate Bosworth

SYDNEY, AUSTRALIA - OCTOBER 12: Kate Bosworth poses during an SKII promotional event at Myer Sydney City on October 12, 2012 in Sydney, Australia. (Photo by Don Arnold/WireImage)

What Were They Thinking?!

This week's worst-dressed crew includes Tyra Banks, Kim Kardashian, and Chloe Sevigny. -- By Matt Whitfield, Yahoo! Staff