Dame Helen Mirren thinks it is "horrific" when young people have cosmetic surgery.

The 66-year-old actress can't understand why younger women are willing to go under the knife to ruin the "purity" of their natural beauty.

She told America's InStyle magazine: "The only thing I don't like on young people is plastic surgery.

"The purity of youthful beauty is so fantastic to me that it's horrific when young girls get fake things."

The British actress has previously defended women for undergoing cosmetic surgery, admitting she can understand why people want to change their appearance.

She has said: "You go, 'I don't want to look at that face anymore,' and I understand that, absolutely.

"I think people should be allowed to do whatever they want to make themselves feel happy."

The 'Arthur' star has also claimed in the past that while she still feels sexy, she doesn't think she has ever been beautiful.

She said: "I'm not beautiful. I was never beautiful. I just clean up nice! Sexiness is different. I don't mind being sexy - but on my own terms. I've always felt very comfortable about my sexuality.

"Women don't lose their sex appeal as they get older, it just moves into a different kind of arena. I don't mean full-on sex appeal - that's really for the young. No, it's some kind of indeterminate thing - an appreciation of life and wisdom and other things, perhaps. There should be a special word for it."