Sienna's Dog Walking StyleWhile not performing on Broadway in "After Miss Julie," the boho chic queen takes her style to the streets of N.Y.C. with pooch Bess

DOWNTOWN COOL

Bopping around the SoHo neighborhood on Oct. 19 with her canine friend in tow, Miller sports a swingy herringbone coat, light-wash slim jeans, suede and leather buckle boots and, of course, her red Prada tote.