ACTRESS Nicole Kidman reckons the perfect sex scene involves “grunting”.

The star, 57, emits animalistic noises during wild romps in her new erotic drama Babygirl.

She plays a CEO who has an fling with an intern, played by Harris Dickinson, 28.

Nicole says realistic sex scenes should replace the glossier portrayals in many Hollywood movies because “it’s a huge part of who we are as human beings”.

She added: “I think sex is still not explored enough on screen, particularly in American films.

“European cinema is a different matter; it’s just part of what they do.

“But America, England, Australia — we don’t talk about it.”

Some of the scenes are so intimate that Kidman has said she could not “orgasm any more” during filming and needed a break.

The Oscar-winner added: “There was an enormous amount of sharing and trust and then frustration.

“It’s like, don’t touch me. There were times when we were shooting where I was like, I don’t want to orgasm any more. Don’t come near me. I hate doing this.

“I don’t care if I am never touched again in my life!

“I’m over it. It was so present all the time for me that it was almost like a burnout.”