Sienna Miller is one cool chick. She can easily sport a runway-worthy gown with a messy bun because that's her style. Sienna isn't one for very dramatic updos or over-the-top makeup. She's fine with just a tube of red lipstick on hand. But every once in a while, she pulls out all the stops to show off her glamorous side. See Sienna in everything from ponytails to top hats in this style retrospective honoring her birthday.
Happy Birthday, Sienna Miller! See Her Most Memorable Beauty Moments