If you're looking for an effortlessly chic costume this year, look no further than Jackie O. Unfortunately she left us in 1994, but her legacy and style will live on forever. Among the signature pieces in Jackie's closet were oversize round sunglasses, pillbox hats, pearls, a khaki trench coat, black flats, bow headbands, and cropped pants. Clearly this woman loved fashion and the fashion world loved her back. Whether she was performing her first lady duties or vacationing on a yacht with her second husband Aristotle Onassis, Jackie was always put together — the world never caught her in sweat pants. Strut a day in this amazing woman's shoes; it might just change your fashion mentality forever.