Check Out Sienna Miller's Beauty Evolution

Happy Birthday Sienna Miller! See 12 of Her Most Beautiful Moments

Hot Lips

Sienna Miller turns 31 today and to celebrate her special moment, I've gathered 12 of her best beauty looks from the red carpets for the duration of her career. With her bright, toothy smile, warm eyes and light, always perfect looking hair, Sienna is a natural beauty who works the red carpet with her bohemian glamour, poise and spirit.

Source: Getty
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