On Katy s birthday all of her animal friends come to the party dressed in clothes of different colors. As Imagination Soup notes this picture book is a great choice for preschoolers since it as clear repeating text and a story that emergent readers can relate to. Based on the song of the same title Imagination Soup says sing about the creatures who go to Katy s birthday party--and what they wear. Mary where her red dress. Henry wore his green sneakers. Katy wore her yellow sweater. The color and clothing repeat. (Green sneakers green sneakers green sneakers.)