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

NICOLE RICHIE

Nicole tested the (purple) waters by posting a digitally enhanced Insta that made her dirty-blonde strands look purple. The nearly 100,000 likes must have convinced her to do it for real.