Celeb Hair Makeovers: Better Before or After?

These stars are crossing into new hair-itory (we couldn't resist). Check out Britney Spears' rainbow mane, Gigi Hadid's dip-dyed ends, Katie Holmes' shoulder-grazing bob and these other major mane changes mane changes

KATE MARA

Blonde hair with slightly darker roots ... so hot right now. The House of Cards star keeps up with the popular hair trend, changing up her signature auburn shade for a lighter sun-kissed look.