Celeb Hair Makeovers: Better Before or After?

These stars are crossing into new hair-itory (sorry – we couldn't resist!). Check out Jessica Alba's chic new bob, Hilary Duff's blue mermaid hair, Lena Dunham's piecey pixie and these other major mane changes

DIANNA AGRON

After a brief stint as a redhead, the Glee actress apparently decided that being blonde is where it's at and went back to her roots, lightening up her locks just in time for summer.