Jon Klassen┬а(born November 29, 1981)┬аis a Canadian writer and illustrator of children's books and an animator. He won both the American┬аCaldecott Medal┬аand the British┬аKate Greenaway Medal┬аfor children's book illustration, recognizing the 2012┬аpicture book┬аThis Is Not My Hat, which he also wrote.┬аHe is the first person to win both awards for the same work.