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Kate Bosworth

LONDON, ENGLAND - FEBRUARY 17: Kate Bosworth attends the Topshop Unique Autumn/ Winter 2013 catwalk show at the Topshop Show Space on February 17, 2013 in London, England. (Photo by Dave M. Benett/Getty Images)

Worst-Dressed Celebs -- Week of 2/18

Vanessa Hudgens, Selena Gomez, and Oprah delivered this week's biggest fashion flubs. -- By Matt Whitfield