The Duchess is a film based on a biographical book by Amanda Foreman, about a young British aristocrat who was married to William Cavendish, Duke of Devonshire. Georgiana was recognized for her beauty and her taste in fashion. But she was more than just a pretty face. She was also interested in politics and had an excellent relationship with ministers and the Royal House in general.

In the film, Keira Knightley shows the life of this young woman in search of the love that is absent in her husband, and the controversies that this brought about in somewhat-conservative 18th century England.