A latest entry in the series that includes Its NOT the Stork! follows the adventures of young Gus and Nellie, who watch their mothers pregnancy and anticipate the arrival of a new sibling while learning engaging facts about how unborn babies develop. Follows the adventures of young Gus and Nellie, who watch their mothers pregnancy and anticipate the arrival of a new sibling while learning engaging facts about how unborn babies develop. Continuing her series for preschoolers, New York Times best-selling author Robie H. Harris follows the stages of pregnancy and childbirth in a matter-of-fact and comfortable way.Gus and Nellie have some exciting news: theres going to be a baby in their family! Join them through the seasons as they watch their mothers pregnancy with fascination and curiosity while awaiting the birth of their new baby sibling. Combining accessible, humorous, and accurate illustrations; conversations between the two siblings; and a factual text, here is the ideal book to help young children understand that the way a growing baby develops inside a womans body, and how a baby is born, are both perfectly normal and totally wonderful.