Keira Knightley has reportedly refused to be a Bond girl because she thinks her breasts aren't big enough.

The 19-year-old actress doesn't believe she can compare to Halle Berry in a bikini, The People reports.

Pierce Brosnan told film-makers the King Arthur star would be perfect as 007's love interest in the next film.

But Keira told Empire magazine: "I don't think I have the assets to be a Bond girl. Anyway I'm no good with bikinis."

Source: Press Release