The actress recalled to Elle magazine about her own damaging experiences as a young actress, stating how as a result she would never let her daughter follow in her footsteps during the teenage years.
"I would 150 million trillion percent be totally discouraging of [my daughter] doing anything like that," she said. "I think you need to be, actually, because if the kid is going to do that then they have to do it on their own.
"I would say teenage years should be done privately. You should be going out and getting unbelievably drunk, getting into ridiculous situations, making mistakes. That's what that time of life is about, and we should do that privately - 1 million trillion zillion percent.
"Saying that, I don't regret it - I wouldn't do my life any differently. But having lived through it... there was a very long time when [interviewers] were all, 'Well, you're a shit actress and you're anorexic and people hate you', which - for a teenager or somebody in their early 20s - is a very strange thing."
Knightley added she is concerned that the film industry doesn't reflect women's lives enough.
"There is an under-representation of our stories, just as there is an under-representation of us in politics and in business and everywhere," she explained. "That's what feminism is [to me] right now - the recognition that we are still not equal."
"I absolutely love guys. I love hanging out around them - well, not all of them, some of them are dickheads - but you know, the ones that I love, I love."
"But you have to recognise that the playing field isn't even yet, and it does have to be even. And you can still like clothes."
See Keira Knightley's full photo shoot and interview in the July issue of Elle, on sale June 5. Also available as digital edition through Apple Newsstand.
Honestly your faves should just give up. She is beyond perfect in every way.