Jen Arena has written over 50 books for kids, including fiction and nonfiction, licensed and original, including Acorn Was a Little Wild , Lady Liberty's Holiday , and the board book companion titles Besos for Baby , Sonrisas for Baby , and Abrazos for Baby . Blanca Gómez is an illustrator living and working in Madrid, Spain. She started doing illustrations for her mother when she was a kid; now she makes illustrations for clients around the world, for her own shop catalog and, of course, sometimes for her mom too. She is the creator of Bookie & Cookie and the illustrator of Very Good Hats , Besos for Baby , Sonrisas for Baby , and Abrazos for Baby .