The 33-year-old "Keeping Up With the Kardashians" and star confirmed on Wednesday that she is pregnant with her and boyfriend and Cleveland Cavaliers player Tristan Thompson first child together.
Though Kylie Jenner and Rob Kardashian didn't show up in the ladies' snaps - which isn't surprising, though Kylie was at the party - the rest of the KarJenner clan did. But fans are hoping she would make the announcement by showing her bump in her own Christmas card.More news: Family of Convicted Indian Spy Arrives in Pakistan to See Him
Khloe posed for selfies with her mama, Kris Jenner.
Kim favoured a sleek oriental-inspired collared gown with a delicate shimmer pattern and made sure her blonde bob was poker-straight.
Even Santa Claus himself took time from his busy present-delivery schedule to call in at the annual extravaganza held at Kris' American pad, much to the delight of Kim's daughter North.More news: Jordan Feldstein, Maroon 5's manager and Jonah Hill's brother, died aged 40
Khloe meanwhile lamented not drinking due to her pregnancy.
Yet after her intense fitness session came a long night of partying.
She said, "I'll be 6 months next week".More news: Prince Harry and Meghan Markle reveal engagement photos
Khloe rubs her baby bump on Kim's Snapchat.