When Mom gets sniffles that are worse than awful, Nancy decides she can help Mom by tidying up and watching JoJo. After all, Nancy is practically an expert at being a big sister, so how hard could it be? Disney Junior's Fancy Nancy: Mademoiselle Mom is a Level One I Can Read, perfect for children learning to sound out words and sentences. Disney Junior's Fancy Nancy is an animated family comedy starring six-year-old Nancy, a girl who is fancy in everything from her advanced vocabulary to her creative, elaborate attire. The show is based on the New York Times bestselling book series Fancy Nancy by Jane O'Connor and Robin Preiss Glasser.