Kim Kardashian's In All Black , filming energy commercial on a bike in Miami

      Kim Kardashian took a tumble while riding a bike as she shot an energy drink commercial in Florida yesterday.For the behind the scene shoot,she was spotted was channelling some serious Audrey Hepburn chic. Teaming her new fringe with a black turtle-neck sweater and sleek black cigarette pants, the 33-year-old looked at home on a beautiful vintage bicycle.