
Speaking at the London premiere of new film The Edge Of Love, Knightley said her co-star is a "wonderful actress".
Matthew Rhys also supported Miller at the event, claiming that the amount of scrutiny young women receive in showbusiness can be tough.
The actor, who plays Welsh poet Dylan Thomas in the film, added: "The boys get it much easier."
The Edge Of Love is released in the UK today.
> Click here for our review of the film



