Kim Kardashian, Khloé Kardashian and Kylie Jenner showed off their kids’ homeschool set-up.“First day of preschool for the munchkins,” the Strong Looks Better Naked author, 36, wrote on her Wednesday, September 30, Instagram Story.The Revenge Body host showed her 2-year-old daughter, True, doing arts and crafts with her cousins Stormi and Chicago, both 2, and Psalm, 16 months.The little ones shaped Play-Doh with cookie cutters, tried finger painting and stirred apples in pots with whisks before