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Christina Applegate

LOS ANGELES, CA - JANUARY 31: Christina Applegate attends the "Kumpania: Flamenco Los Angeles" - Los Angeles Premiere - Arrivals at El Cid on January 31, 2013 in Los Angeles, California. (Photo by Jonathan Leibson/WireImage)

What Were They Thinking?!

This week's worst-dressed crew includes Lindsay Lohan, Rose Byrne, and Christina Applegate. -- By Matt Whitfield