Naturally, the pair didn't skimp on the entertainment, enlisting friend John Legend to perform songs from his new festive album, A Legendary Christmas.
For the children, Kim not only had Santa Claus make an appearance, but she also got a Grinch to pop by.
The whole Kardashian-Jenner clan was in attendance, wearing sparkles and short mini-dresses. Kylie matched with her daughter Stormi in sequin outfits and Khloe matched with True in white, snowflake-covered ensembles.
At midnight, everyone took to the bobsleds, including Kanye and Kim's former/current BFF, Paris Hilton.
Below, everything you need to see from what looks like the party of the year.