Pop Your CollarIf you’re not already up to your neck in fashion, this fall you will be — literally. Sculpted, architectural collars turned neutral-toned coats into loud, dramatic pieces. Maison Martin Margiela’s beige blazer featured a deep V, exposing a bare chest offset by square shoulders, while Stella McCartney’s collar offered a wraparound variation (which doubles as a wool scarf for ultimate winter protection). And at Costume National, the funnel carved into a long black coat delicately drew attention to the face of Mariacarla Boscono. For fall, bundling up means you’ve got to go big.