How long do fashion trends take to resurface? Some say about 20 years (think of how cool ’70s bell-bottoms were in the ’90s). Others are more specific: “When you’re too old to wear them again.” The ’90s have been inching back sartorially, with grungy flannel, jelly sandals, and overalls reliving their heyday on shelves at Topshop and Urban Outfitters.Champagne Supernovas, Maureen Callahan’s history of fashion in the years after AIDS and before 9/11, circles around three figures — Kate Moss, Marc Jacobs, and Alexander McQueen — who glamorized the freaks-and-losers aesthetic and changed the then-hyperspecialized field into a free-for-all art platform. Callahan, the veteran style and pop culture journalis turned author, leads a panel discussion about this fraught, game-changing decade and its residual effects, which influence us today in ways far deeper than jelly sandals.

Tue., Sept. 2, 7 p.m., 2014