Celeb Hair Makeovers: Better Before or After?

These stars are crossing into new hair-itory (we couldn't resist). Check out Julianne Hough's fresh blonde tresses, Hilary Duff's new gray hue, Christina Aguilera's shoulder-grazing lob and these other major mane changes


We don't know if it's for a role or if she was just bored of being blonde (does that happen?) but the actress has traded in her sun-kissed look for a darker brunette hue.