Knightley complains about breasts

Keira Knightley has expressed her horror on viewing promotion pictures of herself in which her bust had been digitally enhanced.

The Pirates of the Caribbean actress agreed to studio bosses adding to her modest A-cup breasts for promotional posters for King Arthur, but was shocked at the extent to which they altered her figure.

"Those things certainly weren't mine. I remember we had an interesting discussion when they said, 'We want to make them slightly larger and you'll get approval,' and I was like, 'Ok, fine. I honestly don't give a s**t,'" the star told Contactmusic.

Knightley was also surprised to find that the practice was common amongst American publications.

She said: "I did one magazine and found out you're not actually allowed to be on a cover in the US without at least a C cup because it turns people off. Apparently they have done market research and found that women want to see no less than a C cup on other women.

"Isn't that crazy? So they made my t**s bigger for that as well," she exclaimed.