Keira Knightley wants bigger breasts. The "Pirates Of The Caribbean" actress isn't happy with her modest bust and wishes she had an ample cleavage like "The Matrix Reloaded" actress Monica Bellucci.

She told television show 'GMTV': "I would love to have t**s! I would love to have Monica Bellucci's figure. But I'm never going to get it. I'm naturally who I am."

Despite wanting bigger breasts, Keira, 22, has ruled out having plastic surgery to boost her assets

She added: "Surgery is far too frightening. I couldn't."

Although she yearns for a larger chest, Keira insists she is happy with her slim figure and admits she regularly exercises and eats healthily to keep fit.

The actress also hit out at society's current obsession with weight and insists women should be happy about themselves whatever their shape or size.

She explained: "I do like to keep fit, only because I like to be able to run around and do things. But I think it would be great if we saw a wider range of women of all ages, of all shapes and sizes in the media."

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