Newly-engaged Avril Lavigne was living it up in on Monday night (Sept. 10) for New York Fashion Week. The soon-to-be Mrs. Chad Kroeger arrived at the Metropolitan Pavilion in thick-rimmed glasses, a black and white ensemble, and tri-colored Skrillex-esque hair for her Spring 2012 Abbey Dawn fashion show. Kylie Jenner was among the models walking the runway in the Canadian’s clothing line. For those of you trying to piece together the Kardashian/Jenner family tree, Kylie is the half-sister of Brody Jenner (as in Avril’s ex-boyfriend). That’s not awkward!