(6 of 12) Fashion Week TrendsFrom Marc Jacobs to Zac Posen to Diane von Furstenberg, all the top designers unveiled their spring collections at New York Fashion Week earlier this month. And from all the shows, there seemed to be some common threads. Here, we highlight 12 of hottest trends seen on the runway. Metallics From handbags to evening gowns to trench coats, metallics made quite a shiny statement on the runways. Ralph Lauren kept the look limited to evening wear, while Marc Jacobs preferred to keep it sassy and sporty.