Loreen Leedy is the author/illustrator of many children's books, including It's Probably Penny, Mapping Penny's World and the best-selling Measuring Penny. Born in Wilmington, Delaware, she majored in art in college but wasn't sure what kind of artist she wanted to be. She started out making jewelry in the shape of pigs, cats, dragons, and other animals, and then one day she started making book characters out of her animals. She lives with her husband in central Florida.