The Pirates of the Caribbean actress declared that her Domino co-star Mickey Rourke is one of the most brilliant actors she's ever worked with.
Knightley praised Rourke's style and sincerity.
"Working with Mickey was amazing. He's completely honest with you - there's no façade", the 20-year-old actress said.
"The thing I love and admire most is that he makes absolutely no pretence at perfection. He can't help but be himself. There are very few people in this industry who can do that", she added.
Keira Knightley has recently attended the premiere of her latest movie, "Pride and Prejudice", while Mickey Rourke, who is currently filming for "Strombreaker" is said to star in "Sin City2".