Keira Knightley's Chanel advert has sparked suspicion that her breasts have been digitally enhanced.

The provocative advert sees the actress pose with a brace covering part of her breast.

However, it seems the self-confessed flat chested actress has grown in that area - sparking accusations that Chanel have given her a digital boost.

It's not the first time that Knightley has had her cleavage digitally enhanced. Posters for her 2004 film King Arthur saw the actress given bigger breasts.

She said at the time, "It was the first time in my life that I had big t**s, and I didn't even need surgery."