Princess Margaret was the original wild-child of the modern British monarchy, a Royal characterized by glamour, controversy and heartbreak. Britain's first celebrity Princess, she was willful, intelligent, witty and charming, yet her whirlwind life was undermined by scandal and a string of unhappy, unfulfilled relationships as she careered from role model and fashion icon to shamed relative. Starring Lucy Cohu (Becoming Jane) and Toby Stephens (Die Another Day), The Queen's Sister puts Margaret's colorful, complicated and controversial character under the microscope, revealing an astonishing life.