The SKIMS founder revealed earlier this month that she and her famous family members would be having a quieter Christmas party this year due to construction.

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.

As the eldest son of Kourtney Kardashian, much of Mason Disick's early life was spent on camera—but the 15-year-old has largely stayed out of the spotlight in recent years. So when the teen made an appearance in his mom's holiday Instagram post this week,

The reality star shared photos from her family's Christmas Eve celebrations on Instagram, including pictures with her kids

Mason Disick made a rare social media appearance in a holiday family photo shared by his mom, Kourtney Kardashian, on Monday. The photo was taken at the annual Kardashian-Jenner Christmas Eve party, which was held at Kendall Jenner's home on December 24.