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Mariah Carey

PASADENA, CA - JANUARY 08: Judge Mariah Carey of "American Idol" speaks onstage during the FOX portion of the 2013 Winter TCA Tour at Langham Hotel on January 8, 2013 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)

What Were They Thinking?!

This week's worst-dressed crew includes Katharine McPhee, Kerry Washington, and Mariah Carey. -- By Matt Whitfield, Yahoo! staff