It seems like every week the Kardashians are celebrating something lately, which is probably why they’ve had to start combining festivities. Yesterday, the infamous fam threw Saint West, who turns 2 tomorrow (Dec. 5), and Reign Aston Disick, who turns 3 on Dec. 14, a joint birthday bash at home. The party was more low-key than usual for the KUWTK crew but adorbs none-the-less.

Kim and Kourtney Kardashian surprised their sons with their own individual Monsters Inc.-themed cakes and then the tots enjoyed ice skating in Kris Jenner’s winter wonderland backyard decorated with twinkly lights and balloons that spelled out “Merry Monster Mash” in honor of the occasion.

Kim uploaded a sweet pic of Kanye West walking Saint and his big sis, North West, onto the rink via Snapchat. Who needs a huge party anyway when you basically have the North Pole in your yard?

Happy Birthday, Saintie!!!