Kim Kardashian has finally unveiled her fun-packed Christmas photos with her kids, and they are oh-so-chic. The socialite shares North, Saint, Chicago, and Psalm with her ex-husband, Kanye West. Now,

A large contingency of the Kardashian-Jenner family and their closest friends were in attendance for an intimate Christmas Eve get-together, but from the looks of Kourtney Kardashian’s images from the night,

Guess this is Kim Kardashian’s version of casual. After the Skims founder, 44, told Vogue that the famous family would forgo their annual over-the-top party in favor of a “really low-key” Christmas Eve party, she got all dressed up in a skin-tight gown.

Kourtney wore an all-black look for the intimate gathering, rocking a plunging sheer black floor-length dress over a black bra and hot pants. She wore a matching black headscarf and belted the dress to accentuate her waist.

Mason Disick made a rare appearance in mom Kourtney Kardashian's family holiday photo, as the media-shy teen posed at their annual Christmas Eve bash.