VIDEO : Kim K Says North Is Having A Hard Time As Big Sis

North West has to learn how to be a big sister. (Greatstock/Splash) Los Angeles - Kim Kardashian West admits daughter North is still struggling to cope with being an older sister. The reality star and her husband Kanye West welcomed son Saint into the world last December and Kim admits three-year-old North is taking her time accepting she has to share everything with him. Kim - whose sister Kourtney has three children, Mason, six, Penelope, four, and 19-month-old Reign - said: "We talk about North being a big sister all all the time. "She's still getting the concept of having a brother, though.