Holly studied illustration at Edinburgh College of Art and her first picture book, Silly Jack, was published in 2006. Since then, she has created a number of picture books, including her first title for HarperCollins, About a Bear, which was published in 2011.
Holly has recently moved from Edinburgh to Henley-on-Thames with her husband, their two young daughters and a Dalmatian called Marbles, all of whom provide constant inspiration for her work.