All Fashion Week long, we heard the same question. "Are you going to GNR?"

It was whispered at The Standard, at Le Baron, at shows and parties too sundry to list. By the weekend, it had become clear that last night's Fashion Week closer, hosted by Nur Khan and DeLéon Tequila at Hiro Ballroom and featuring the inimitable Guns N' Roses, was going to be the party to beat. All of New York would be there—and all of New York was, last night: newly pregnant Sienna Miller and boyfriend Tom Sturridge, Matt Damon and wife Luciana, Justin Timberlake, Jared Leto, Kellan Lutz, Olivia Wilde and Jason Sudeikis, Jack Huston, Evan Rachel Wood—and those are just the actors. Joining them in the shoulder-to-shoulder-packed venue to watch Axl Rose & co. tear up "Live and Let Die," among a host of other hits in a two-hour-long show, were Stephanie LaCava, Byrdie Bell, Michelle Harper, Alexandra Richards, and, for whatever reason, Chelsea Clinton. And among those we least expected to be a GNR die-hard was Ryan McGinley, who stood near the front and seemed to know every word by heart.