As Bruce Jenner makes his transition from a man to a woman, his stepdaughter Kourtney Kardashian and her boyfriend Scott Disick are reportedly finding a way to explain it to their kids to be a bit difficult. Kourtney and Scott have three children together – 5-year-old Mason, 2-year-old Penelope and newborn Reign – but it’s Mason who they’re struggling with the most. “The whole family is supportive of Bruce’s transition,” a source said. “But Scott thinks it is going to be a little weird to have to explain to the kids what is going on. They are too young to understand.”