Harriet Muncaster

Harriet Muncaster is the author and illustrator of the internationally bestselling Isadora Moon, Mirabelle and Emerald series of young reader books, the top-5 UK bestselling The Diary of Wiska Wildflower series and the middle-grade Victoria Stitch series, all published by Oxford University Press. The Isadora Moon books are available in forty-two different languages, and as audio books. The Isadora Moon series won the El Corte Inglés Children's Book of the Year in 2019 and has sold over 7 million copies worldwide. There are TV series of both Isadora Moon and Emerald available now. In 2026, Harriet was awarded an honorary Doctorate of Arts by the University of Hertfordshire for services to children's literature.

Harriet lives in Hertfordshire, England. She loves everything magical, sparkly, and teeny-tiny.