Alexander Wang Spring 2013 | Runway

Alexander Wang Spring 2013

Alexander Wang Spring 2013 | Runway

It's rare, during New York Fashion Week, to attend a show that has audiences literally cheering aloud. At Alexander Wang's Spring 2013 show today, that's precisely what happened.

The outing started out standard enough, with militaristic and sports-inspired silhouettes in black and white leather and rubberized twill. The new story for Wang this season, though, was cutouts; they came in stripes and floating geometric patterns on boxy jackets and body-hugging shifts, and as hourglass-enhancing openings on the sides of cable-knit tops and sweater dresses. All in all, it made for an intriguing enough lineup.

Then it happened. At the end of the show, after all the models — including Liberty Ross, who was making a cameo catwalk appearance — had walked, several models marched out to take their places along the runway. The lights dimmed, then a black light came on, and then utter darkness. And there, in the cavernous space of Pier 94, the models' all-white outfits began to glow in the dark — much to the audience's raucous delight.