By Sharon Clott Kanter
Updated Jul 13, 2011 @ 1:05 pm
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Bauer-Griffin; Jason Merritt/Getty Images

Dakota Fanning debuted a new look in London this week—a super short pixie. The 17-year-old actress is currently filming Now Is Good, in which she plays a teen with leukemia who makes a list of things she wants to do before the disease takes her. It turns out, this look is just a wig, her rep confirmed to People. See Fanning and dozens more amazing hair makeovers in the gallery.