Celebrity Hair Affair: Kate Bosworth

Kate Bosworth doesn't vary her diet much. It appears to be one bite of tuna fish per day and that's about it. Sometimes, a Diet Coke may be thrown in there.

The actress sure likes to mix up her hairstyles, though. The celebrity weight loss champ went for a loose, tousled texture for an Art of Elysium benefit in West Hollywood, then switched to an elegant updo at the Vanity Fair Oscars party...

Which Kate Bosworth hairstyle is best?