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

KRISTIN CHENOWETH 

"I didn't watch," the actress told PEOPLE about being afraid to look when the scissors came out. Luckily, she's happy with the results. "I think I've needed this for a long time."