Claudia's work has been exhibited in London, Z rich and Berlin and has been selected to show at the illustrators' exhibition in Bologna. In 2011 she was awarded the Booktrust Best New Illustrators Award in the UK. She attended Glasgow's School of Art and then Kingston University, graduating with her Masters in Illustration in 2007 - the same year she founded Cloud Cuckoo Studio with fellow illustrator Katharina Koall in London's East End.
""Author and illustrator Boldt specializes in anthropomorphic animal characters for her fun and entertaining stories. The characters come off as authentic in their feelings and actions, and the artistic design is on the minimalistic side, allowing the emotion of the narrative to shine through... Best shared between friends and family, this graphic novel provides an honest normalcy to growing up and is highly recommended.""–School Library Journal