Keira Knightley has reportedly banned studio bosses from digitally enhancing her cleavage.

The 23-year-old actress - who plays Georgiana, the Duchess of Devonshire, in period drama 'The Duchess' - is "proud" of her modest assets and didn't want them changed in any publicity shots.

"But she looks flat-chested throughout the whole movie."

Keira's decision comes after her breasts were enlarged for posters and in publicity stills for her 2004 movie 'King Arthur'.

She said at the time: "Those things certainly weren't mine! I was like, 'OK, fine. I honestly don't give a s**t!' "

Keira - who is dating her 'Pride and Prejudice' co-star Rupert Friend - previously revealed she would like to have larger breasts, adding: "I would love to have boobs! I'm never going to get them. I'm naturally who I am."

According to a People Magazine report, however, we are going to get to see a completely nude Keira Knightley sex scene in her new film The Edge of Love.

According to additional reports, the scene in question wasn't even scripted as a nude scene, but Knightley thought it would be better that way.

Also, Sienna Miller is upset Keira Knightley may star in My Fair Lady. The two struck up a close friendship on the set of The Edge Of Love, but there's more than a bit of rivalry between them.

According to Katie Nicholl, Sienna is 'totally miffed' that Keira is in final-stage talks to take the part of Eliza Doolittle in Cameron Mackintosh's remake of the classic musical My Fair Lady.

Keira, who has split from her actor boyfriend Rhys Ifans, has had set her heart on the role, played in the 1964 original by Audrey Hepburn.

Here is Keira Knightly, now 26, topless in "The Hole," when she was rumored to be just 16 years old. That would make the following photos barely legal.