“Most people trip in heels. But when I wear flat shoes I trip 20 times, as opposed to walking in a straight line with heels,” said Ivanka Patel, a Boston-based fashion guru decked out in Audrey Hepburn’s classic style. New York Fashion Week, showcasing the Spring 2015 collections, started on September 4 and ended on September 11. But the best style is not just on the runways. It’s also on the sidewalks. We spotted some of the boldest street-style looks outside Lincoln Center, where most of the shows were held, and asked folks to explain their inspiration.