Knightley will go topless, but on condition

If Keira Knightley is required to shoot topless, she has two conditions -- no enlargement and no retouch.

The "Pirates of the Carribbean" actress featured in a front nude shot for Interview magazine a few months ago, and she's ready to do more, reports eonline.com.

"I've had my body manipulated so many different times for so many different reasons, whether it's paparazzi photographers or for film posters. And that (shoot) was one of the ones where I said: 'O', I'm fine doing the topless shot so long as you don't make them any bigger or retouch.'

"Because it does feel important to say it really doesn't matter what shape you are," she told Times of London.

She feels "women's bodies are a battleground and photography is partly to blame."

"It's much easier to take a picture of somebody without a shape; it simply is. Whereas actually you need tremendous skill to be able get a woman's shape and make it look like it does in life, which is always beautiful. But our society is so photographic now, it becomes more difficult to see all of those different varieties of shape," she added.