This delightful flip book by renowned author-illustrator team Laura Numeroff and Lynn Munsinger celebrates all the wonderful things brothers and sisters can do together, from climbing trees and sharing snacks to playing sports and making music. After reading what brothers do best, simply flip the book over and enjoy the story againfrom a sister's perspective! With charming mirrored text and adorable illustrations, this exciting follow-up to the best-selling What Mommies Do Best/What Daddies Do Best and What Grandmas Do Best/What Grandpas Do Best is sure to appeal to any child who has or wishes for a brother or sister to play with.