Tad Carpenter is a designer, illustrator, writer, and educator. Tad co-runs a design and branding studio Carpenter Collective with his wife and partner, Jessica Carpenter. Tad has written and illustrated over a dozen books intended for people of all ages, including the I Say, You Say series, Monster's New Undies, as well as Sad Santa. Tad lives in Kansas City, Missouri.
Samantha Berger is the award-winning author of Crankenstein, What If, Snoozefest, Martha Doesn't Say Sorry, and over 80 books for young readers. She also writes cartoons and does voice-overs. Samantha splits her time between New York City and sunny California. Visit her online at samanthaberger.com.

These are my undies!
A sweet work of art!
Uh-oh! My undies!
They just fell apart.

Monster is JUST FINE with his old undies, thank you very much. But when his undies fall apart, what's a monster to do? His mommy takes him shopping, of course! But finding the perfect pair of undies is not going to be easy. . .