By Jailene Cuevas Kourtney Kardashian Barker took a break from her newborn and attended the iconic Kardashian-Jenner Christmas party. Kourtney recently gave birth to her and Travis Barker’s baby boy, Rocky, and posted pictures on social media after attending Kim Kardashian’s Christmas party, writing “not much in the closet fits yet.” Kourtney’s pictures showed her wearing a black oversized fur coat with black shapewear under, transparent black stockings, hair in a slicked-back ponytail and strappy black heels. She captioned the post: “When not much in the closet fits yet and the boobs are fill…