If the New York runways are any indication, fall 2009 is going to have a hard time passing through an airport metal detector. From the chain mail at Rag & Bone to the studding on western-style denim shirts and leather jackets at William Rast and shrapnel-like mounds of metal adorning the shoulders and lining the lapels of Z Zegna trench coats, heavy metal was the embellishment of the season. G-Star took the theme further, with metallic-looking pieces that resembled steel plates riveted together. Z Zegna is shown.