Sienna Miller Stuns in Patriotic Marc Jacobs in London

Is Sienna Miller the best dressed person of this decade? The 33-year-old British actress emerged from all things boho, and a brief work sabbatical, with a new stylist, Kate Young, and a fresh look last year. To promote her hit movies of 2014, Foxcatcher and American Sniper, Miller hit the press circuit in brands like Altuzarra and Celine. This year, she’s favored American classics like Ralph Lauren and Calvin Klein along with emerging designers, like the London-based Galvan.

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