Take cover — they're about to pop!
For Kim in particular, giving birth to two sets of twins (back to back) wasn't easy.
"I think with twins that every little morsel of food that you eat...goes to the baby," she said in 2014. "I made two human beings at the same time and I gained 50 pounds. Which I gained 50 pounds with KJ, so the twins, I think they took it from me."
As for how she keeps her stomach flat after sporting such a massive baby bump?
"I [did] wear kind of like a homemade-type girdle after I had the babies," she added. "For six weeks, and I'm wrapped so damn tight for a period of time—and it makes your stomach flat as a board."
Check out the gallery below to see more pics of celebrities with massive baby bumps.