Judith Viorst is the author of Alexander and the Terrible, Horrible, No Good, Very Bad Day, among other books for children and adults. She is also a newspaper columnist who frequently writes for The New York Times and the Washington Post. She lives in Washington, D.C.
Sophie Blackall has illustrated many books for young readers, including Meet Wild Boars and The Big Red Lollipop. She is also the illustrator of the popular series Ivy and Bean. She lives in Brooklyn, New York, with her two children.