The first trailer for the Keira Knightley starring period biopic THE DUCHESS wasn’t what anyone would call “good”, mostly due to the fact that it was just a series of disjointed scenes that didn’t tell us anything about the movie or its tone. That and it was boring. This below second trailer, however, fleshes out the story a lot more and generally showcases a rather promising film. That and we get a prime shot of Knightley’s naked ass cheeks. The film of course tells the story of the titular Duchess of Devonshire (Knightley), a celebrated socialite of the 18th century who was a direct descendant of Princess Diana. The film opens September 19th in limited release.