We fell for Rachel Bilson's cute California style back when she was on the OC, and our adoration has only grown stronger. Her signature look continues to be flaunted on the set of Hart of Dixie, in the front row of Fashion Week's hottest shows, and all over the blogosphere.

It's obvious the petite actress has a lot of fun with fashion-she ranges from sporty to girly, functional to frilly, sophisticated to frivolous. Not surprisingly, she has cited Diane Kruger and Sienna Miller as two of her top style icons.

Without further ado, we gathered 10 of her most charming looks for your perusal. Can you pick a favorite? Vote in the poll below and don't be afraid to gush in the comments!

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Photo Credit: Valerie Macon, Getty Images