Keira Knightley has revealed that her very posh and ladylike appearance in just recently premiered film 'The Duchess' is perhaps a bit of a farce, as she was actually walking around on set, burping like a drunken sailor.

In the film, Knightley and her co-stars all had to don Georgian style outfits and headgear, as the movie tells the story of Georgiana Spencer, the Duchess of Devonshire. These elaborate outfits inevitably included corsets, and the 23-year-old actress claims that having your gut laced up does not exactly aid one?s digestion.

"The corsets were very restrictive," explained the pretty Brit.

"The worst part was after lunch because they don?t help your digestion.

"My co-star Hayley Atwell and I were playing ladylike characters but belched all over the place."