I use MCC and they have 3 kids now. I play with aging off so I make weekly rounds on my RL Saturday to all NPC's and age up babies and such. I add things to the house they need or renovate to make more rooms if needed. Their house is huge though. I added toddler and kids stuff a while ago. End of last round they have a kid, toddler and baby. Two girls and a baby boy.
A few other tidbits ...
I also aged up the Landgraab twin girls to teens and the Goths have another son name MJ who is a teen now also. MCC had Malcolm marry Dana Caliente. No kids yet. MCC married Marus Flex and Katrina Calienta. They have two kids. The Pancakes are still together and have a teen son and a baby girl. Luna Villareal married Wolfgang Munch. The stories go on. It's a great MOD but it requires some work like home renovations and such for true story progression!