KEEPING UP WITH KYLIE: In the ever-photographed, -filmed, -tweeted Kardashian world, Kylie Jenner is the latest sibling to be getting more of the spotlight. The teenager will make her runway debut Monday at the Abbey Dawn by Avril Lavigne show. The raven-haired youngest daughter of Kris and Bruce Jenner will take three turns on the catwalk as part of Style360 at the Metropolitan Pavilion. The high schooler got the nod thanks to her half-brother, Brody Jenner, whose is Lavigne’s boyfriend. Given the Kardashian’s binding family ties, showgoers won’t be surprised to see Brody Jenner in the house, as well as his stepsister Kendall Jenner, another aspiring model. Even Lavigne might find her star eclipsed should rumors of Kim and Kourtney Kardashian turning up in the front row prove to be a reality.