Jenner ended her post by writing, "I love you so much Chi-Chi!!!!! Have the most magical day!!" Chicago is one of Jenner's 10 grandchildren. She is also grandma to Psalm, 2, True, 3, Stormi, 3, Dream, 5, Saint, 6, Reign, 7, North, 8, Penelope, 9, and Mason, 12. She is about to become a grandmother of 11 when her daughter Kylie Jenner gives birth to her second child.