About the Authors

Olivia Cosneau has illustrated over a dozen books, including What's Up? and How Do You Sleep? in the Flip Flap Pop-Up series. Bernard Duisit is the author of What's Up?, This or That?, Can You Keep a Straight Face?, How Do You Sleep?, What Are You Wearing Today? and Are You Hungry?, all in the Flip Flap Pop-Up series.

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