via vogue.com
Fashion photographer Mario Testino captures model Sienna Miller for the cover story of American Vogue's January 2015 issue .
Fashion editor Tonne Goodman selected pieces from the likes of Burberry Prorsum, Derek Lam, Saint Laurent by Hedi Slimane, Emilio Pucci, Rag & Bone, Céline, Chloé, Prada, Louis Vuitton, Gucci, Valentino, Stella McCartney, and Eugenia Kim.
Sienna Miller said: “I’m trying to be cool about it. But secretly inside, I’m dancing.”