When Sienna Miller got her first big acting job on the short-lived FOX television show Keen Eddie, she had no grand plans for her career. Surrounded by a bustling crew and a shiny, big-budget production, she was simply happy to be there, and as a 19-year-old with zero drama school experience, she had no idea about the competitive side of the industry, which instilled in her a na\xefve confidence in auditions that led to early success.Although Keen Eddie was abruptly cancelled, Sienna\u2019s film career was taking off. Within the span of a few years, she made her mark in films like Layer Cake, Alfie, and Factory Girl. Of course, she learned relatively quickly that success and fame in her profession meant the loss of her cherished private life, and in the eyes of the prying, often aggressive paparazzi, she was perfect tabloid fodder. \u201cWhen I was at work, I was completely immersed and serious, but I just didn\u2019t understand why I couldn\u2019t be very serious at work and very frivolous outside of it.\u201dDespite her challenges with the media, Sienna\u2019s love for her work never wavered. In recent years, she\u2019s taken on new, exciting acting challenges. Despite being initially terrified by the immensity of the role, she turns in a heart-wrenching, tour de force performance in Jake Scott\u2019s new film American Woman.Sienna joins\xa0Off Camera\xa0to talk about the self-torture inherent in the profession, getting bribed with a pony and a rabbit to go to boarding school, and what it was like to spend an hour in the shoes of Tippi Hedren, getting pelted with flying birds.