Kim Kardashian, 40, has given fans a glimpse into her bedtime routine with youngest son, Psalm West, 2. The Keeping Up With the Kardashians star took to her Instagram Story on September 28 to share a clip of the youngster sucking his thumb while getting ready to sleep. Psalm’s hair was pulled back in tight braids, and he cut a cool figure in a blue and white tee with a gold chain necklace. “Peekaboo,” the mom-of-four was heard saying.