Hyewon Yum is the author and illustrator of many acclaimed picture books including The Twins' Little Sister, and Last Night, a Fiction Honorable Mention for the Bologna Ragazzi award and Winner of the Golden Kite Award; There are No Scary Wolves, Winner of Society of illustrators' Founder's Award; The Twins' Blanket, a Junior Library Guild selection; and Mom, It's my first day of Kindergarten!, which won the Ezra Jack Keats New Illustrator award and was selected as a Kirkus Reviews Best Book of the Year; and Saturday Is Swimming Day, which won a Charlotte Zolotow Honor. Her latest title, Lion Needs a Haircut, explores the universal fear of first haircuts with honesty, tenderness, and humor. She has two sons who hate haircuts. She also doesn’t like haircuts, but she’s never told her kids that. She lives in Brooklyn with her roaring family.