"The Tailor of Gloucester" is a children's book written and illustrated by Beatrix Potter, privately printed by the author in 1902, and published in a trade edition by Frederick Warne & Co. in October 1903. The story is about a tailor whose work on a waistcoat is finished by the grateful mice he rescues from his cat and was based on a real world incident involving a tailor and his assistants. For years, Potter declared that of all her books it was her personal favourite.