Who Has What?: All About Girls Bodies and Boys Bodies Join siblings Nellie and Gus on a day out at the beach as they ask questions and figure out the similarities and differences between boys and girls in a humorous and honest way. With charming, informative words and pictures, this book will reassure children that whether they have a girls body or a boys body, their bodies are truly amazing and totally wonderful A new picture book series for young children from bestselling author Robie H. Harris, illustrated by Nadine Bernard Westcott.