What's Her Best Hair?

See the stars' latest cuts and color changes – and then vote on which do suits Lauren Conrad, Kristen Stewart and more.

LAUREN CONRAD

The California blonde gave up her signature hairstyle for a long brown bob – but only for the day while posing for a magazine. "I got to wear a brown wig all day," she tweeted. "It [was] fun… Kinda like playing dress up."

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