Judith Viorst was born and brought up in New Jersey and has lived in Washington, DC, since 1960, when she married Milton Viorst, a political writer. A graduate in 1981 of the Washington Psychoanalytic Institute, Viorst writes in many different areas: science books, childrens chapter and picture booksincluding the beloved Alexander and the Terrible, Horrible, No Good, Very Bad Day, which has sold some four million copies; adult fiction and nonfiction including the New York Times bestseller, Necessary Losses; poetry for children and adults, and four musicals. Her most recent book of poetry for children, What Are You Glad About? What Are You Mad About? was published in 2016. Lulu Is Getting a Sister is the fourth book in the Lulu series.
Ray Cruz is the illustrator of the modern classics Alexander and the Terrible, Horrible, No Good, Very Bad Day and Alexander, Who Used To Be Rich Last Sunday.
Robin Preiss Glasser is the #1 New York Times bestselling illustrator of the Fancy Nancy series, written by Jane OConnor; America: A Patriotic Primer, A Is for Abigail, and Our Fifty States by Lynne Cheney; and Tea for Ruby by Sarah Ferguson, the Duchess of York. She lives in Southern California with her family.