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Sharon Stone

BEVERLY HILLS, CA - NOVEMBER 01: Sharon Stone attends the 10th annual Lupus LA Hollywood Bag Ladies Event at the Beverly Wilshire Four Seasons Hotel on November 1, 2012 in Beverly Hills, California. (Photo by Tibrina Hobson/WireImage)

What Were They Thinking?!

This week's worst-dressed crew includes Sharon Stone, Kourtney Kardashian, and Christina Aguilera. -- By Matt Whitfield, Yahoo! Staff