Carey and husband Nick Cannon unveiled 6-month-old Monroe and Moroccan on ABC's "20/20" Friday and were gushy with excitement about their offspring.
But Mariah said pregnancy was no disco and she doesn't plan to repeat the process, People reported Saturday.
"I don't think I understood the enormity or the magnitude of what it really does to your body," she said. "Like it's not just, oh you don't look pretty and you have a bump."
Two seems to be enough for now. Cannon said he expected his new kids to earn Ph.D.s, and Mariah is keeping her pipes in shape crooning lullabies in their Manhattan nursery.
"They really respond to music," she said.