Saint West and Reign Disick Have a Joint "Monster Mash"-Themed Birthday Party
Raymond Hall/GC Images/Getty Images

The Kardashian-Jenner family is currently preparing to welcome anywhere between one and three new babies in the coming months, but until then, they're staying busy by celebrating some of the youngest members of their all-star clan. On Sunday, Saint West and Reign Disick had a joint monster-themed birthday party. (West will be 2 on Tuesday, and Disick will turn 3 on December 14, the same day that older brother Mason turns 8.)

Proud moms Kim Kardashian West and Kourtney Kardashian shared photos and videos from the birthday bash on their Snapchat and Instagram Stories. Per the sisters's pics, highlights of the party included a s'mores station; a fake snow–covered hill with candy cane–patterned inflatable sleds; an ice rink surrounded by balloons spelling out "Merry Monster Mash"; a cake for each of the boys, with Mike Wazowski from Monsters, Inc. sitting on Saint's cake and Sully from the Disney film on Reign's; and Santa Claus himself lounging in a deck chair underneath a tree. Kardashian West also shared photos of husband Kanye West, 4-year-old daughter North, and Saint all wearing matching shoes and coordinating sweatshirt-sweatpants combos, while her older sister shared a photo of Reign running across the ice rink while wearing a Sully costume.

Kim Kardashian/Snapchat
Kim Kardashian/Snapchat
Kim Kardashian/Snapchat

The family's last celebrations took place in mid-November, when Kardashian West and younger sister Kylie Jenner threw back-to-back baby showers. Kardashian West, whose surrogate is reportedly due any day now, prepped for North and Saint's little sister with a cherry blossom–themed party on Saturday, November 11. The following day, Jenner reportedly hosted an extremely low-key pajama party–themed shower at her Calabasas home. Although none of the guests at the 20-year-old's party shared any photos from the event on social media, paparazzi spotted elegantly decorated tables and huge flower arrangements underneath a tent in Jenner's backyard.

It's still unknown when Jenner and big sis Khloé Kardashian are due, but if Kardashian West's surrogate is really on track to give birth this month, there might be at least one new Kardashian-Jenner by the time the next family get-together, Kris Jenner's annual Christmas Eve party, rolls around later this month.