The 33-year-old reality star and the 20-year-old makeup mogul are both due around February.
“Kylie is over the moon about her pregnancy. Khloe and Kylie are both due around the same time. They are approximately 4 months along,” a source told People.
“Kylie loves how close-knit her family is and is thrilled to bring that to her own family. She feels more prepared than ever, especially since she will be sharing this journey with Khloe,” the source added. “They are looking at it like a unifying experience for them as sisters.”