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We all know her as the high priestess of hippie glamour, but it turns out Sienna Miller is more of a style chameleon than we thought. Charting her fashion evolution through a decade and a half of red carpet appearances, it's clear there's so much more to her style than just her signature bohemian look.

From punk at the Met Gala to full-on glam in Cannes, Sienna has some amazing fashion credentials, and it's no surprise. She started out as a model, after all, and used to run a clothing label, Twenty8Twelve, alongside her fashion designer sister, Savannah (chic runs in the family). Barring some low points at the start of her career, we can certainly say Sienna has built for herself quite the impressive red carpet resume!

Here's a look back at her evolution.