A source with direct knowledge tells us Kylie is still in the "very early stages" of the pregnancy and does not yet know the sex of the baby ... who will make 3-year-old Stormi, a big sister. We do not yet know when the baby is due.
Kylie's made it clear in recent years she didn't want Stormi to be an only child ... saying she felt pressure to have another child in 2020 but wasn't ready for it just yet.
Caitlyn Jenneralso seemed to let the cat out of the bag Thursday when she said she just learned one of her kids is expecting. Caitlyn's son, Burt, says he's expecting a third child with his wife, Valerie, but now we know Kylie will be bringing a new kiddo into the world too.