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.

Laura Numeroff is the New York Times best-selling author of If You Give a Mouse a Cookie and What Mommies Do Best/What Daddies Do Best, and she’s also the youngest of three sisters. Born in Brooklyn, New York, she now resides in Los Angeles. Lynn Munsinger has illustrated dozens of children’s books, including Tacky the Penguin by Helen Lester and What Mommies Do Best/What Daddies Do Best by Laura Numeroff. She spends winters in Vermont and snowless seasons in Connecticut.