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No one has ever doubted Sienna Miller‘s commitment to fashion — from cutting edge style on the red carpet to even co-designing her own Twenty8Twelve line with her sister Savannah — but she’s taken it to a whole new level this week while promoting G.I. Joe: Rise of the Cobra in N.Y.C. Yesterday, the tireless fashionista changed five times, with each outfit more glamorous than the next! Her day kicked off with a plunging red frock paired with bow-topped Chloe sandals, switching into a shimmering top and black wrap skirt from Derek Lam. Next up, a confetti print Diane von Furstenberg dress with sharp shoulders paired with two-tone T-straps. The evening saw a darkly printed minidress paired with her favorite studded black booties before changing into a casually chic black Diane von Furstenberg jumpsuit and gladiator sandals for dinner at the Waverly Inn. Phew, we’re exhausted just thinking about wearing so many gorgeous looks in one day! Tell us: Which of Sienna’s looks do you like best?