On Sunday, Kris Jenner hosted her annual pre-Christmas party. Although, several celebrities came out to celebrate the most wonderful time of the year, everyone immediately noticed that there were no signs of Kylie Jenner

Well, thanks to Khloe Kardashian, there's proof that Kylie Jenner was indeed at her mom's party. 

Khloe took to her Snapchat to share a few photo booth pictures from the festive night. The pregnant sisters appeared in good spirits, but there was no sign of Jenner's "alleged" baby bump.

Khloe definitely didn't hide her bun in the oven. The Revenge Body star cradled her baby bump in several photos and danced the night away in a beautiful sequence jumpsuit. Kardashian finally revealed that she is currently six months pregnant and is expecting her first child with Tristan Thompson.

Jenner even posed for separate pictures with her boyfriend, Travis Scott, but there were still no shots of her baby bump. However, rumors are speculating that Scott is cradling Jenner's stomach as he is holding her from behind. All of the photos are taken from the chest up. 

According to PEOPLE, Jenner has been celebrating her pregnancy away from the cameras. 

"She still acts like she wants to keep her pregnancy private," a source said

When Will Kylie Reveal Her Pregnancy? 

While, she did make an appearance at her mother's Christmas Eve function, Jenner was nowhere to be found in the family's Christmas photo.

The Kardashians are known to go over the top when it comes to their annual family Christmas photo, but Jenner decided to sit this year out. Fans of the beauty mogul just knew that the final Kardashian photo would reveal Jenner's pregnancy, but they were very disappointed as she did not appear in any of the 25 photos.

Fans took to Twitter to express how devastated they were that Kylie still has yet to confirm her pregnancy.

Although, Jenner did not appear in the Kardashians Christmas photo she did make another appearance on Khloe's Snapchat on Monday. In the quick clip, Khloe tells her younger sister that everyone assumed she wasn't at their mother's Christmas party. Jenner replies "I was."