Rhyming text describes a great variety of hats worn by celebrities throughout history.

"Some people think hats are fancy things you can buy at a dressy store, but that's just the tip of the iceberg. In this book, acorns and raspberries are snug hats for your fingers, and an empty pudding cup is a good hat for a stuffed bear. Pajama pants make dangly hats, books can be dramatic hats, and bubbles make very fine hats as well (if temporary)." -- Publisher's description.

Minerva Louise, a snow-loving chicken, mistakes a pair of mittens for two hats to keep both ends warm.

A young girl looks for her hat and discovers that her baby sister has gotten it wet.

Batman meets and defeats the Mad Hatter.

Two turtles find a hat that looks good on both of them, but, with fairness in mind, they decide to leave it be, until night falls and one of the turtles changes its mind.

When a squirrel uses his red hat to mark the spot where he buried an acorn, he sets off a chain of events involving other creatures, each of which finds an unusual use for the chapeau.

As Ant, Hat, and Dog make their way to the moon to visit Ant's cousins, they discover that big dreams are not impossible, especially when new friends provide help along the way.

Dog and Hat are practically inseparable, and when the dots on Dog's favorite shirt disappear down a storm drain, the two friends descend into the sewers where they encounter many obstacles and unforeseen dangers--and come face-to-face with an alligator.