The Duchess is a 2008 British drama film directed by Saul Dibb. It is based on Amanda Foreman's biography of the late 18th-century English aristocrat Georgiana Cavendish, Duchess of Devonshire. It was released in September 2008 in the United Kingdom. The film received the Academy Award for Best Costume Design at the 81st ceremony in 2009. The film costumer was Michael O'Connor.