Katharine Holabird grew up in a family of architects and artists in Chicago. As a child, she lived in an imaginary world of fairy tales, princesses, and ballerinas, and loved to perform and dance with her sisters.

She wrote the first Angelina Ballerina at the kitchen table with her daughters twirling around her. Katharine has three grown children and three grandchildren, and now lives in New York City with her husband.

Sarah grew up in Anglesey, North Wales. She studied illustration at the University of the West of England, in Bristol, and hasn't looked back since.

Sarah has created many books, working for a large variety of publishers, including illustrating the Rumblewick series, which has sold worldwide and is under movie option with DreamWorks.

Her Princess series, written by Caryl Hart, has sold over 220,000 copies worldwide. Sarah lives in Bristol with her husband, two children and a grumpy guinea pig.