Holly Sterling was born in Dublin and grew up in southern England. Holly competes for her country in karate; she is a double National Champion and Gold and Bronze medallist from the WSKA World Championships. She lives near Sunderland. '15 Things Not to do with a Baby' was her first published picture book. Moira Butterfield has written numerous children's books, including award-winning work for under-5s, highly commended historical, science and natural history non-fiction.