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

JULIANNE HOUGH

Apparently short hair do care. Julianne bucked the trend and added extensions to her shoulder-length hair, captioning her Instagram, "#changeisgood."