This Is Not My Hat by Jon Klassen is a 2013 Caldecott winner is about a small fish turned hat-thief. The incongruity of the situation and the illustrations make this story so much fun to read. Klassen continues to delight both parent and child with his award-winning stories.
Caldecott Award Winner, 2013.
Klassen, Jon. This Is Not My Hat. Walker Books, 2014.