Saoirse Ronan doesn't get nervous about sex scenes.

Saoirse Ronan

Saoirse Ronan

The 26-year-old actress had a number of intimate moments with Kate Winslet in their new movie 'Ammonite' but she's less apprehensive about them than when she has to lock lips on screen because they are much more "technical" than many other scenes.

She said: "I've been very lucky that I've never felt overly nervous doing sex scenes.

"To me, they're so completely technical. It's not like a kissing scene, where you're actually kissing someone. It's purely technical and choreographed. I've just always sort of seen it as that, which I think is probably a good way to go about it."

Director Francis Lee let the two actress choreograph the sex scene themselves and Saoirse admitted they had a lot of "fun" putting it together.

She told 'Entertainment Tonight': "In terms of a sex scene between two women, the two of us naturally took the lead. We know what we like, really, and we could have an open conversation about that.

"We talked through the progression from one sex scene into the next and how the characters needed to take it a step further each time.

"But definitely, being able to lead the conversation and take it in the direction we felt comfortable with was wonderful.

"And it was fun! It was really fun to go, 'Well, what about this? And what if you do that?' I think that was a new experience for both of us."

While the Oscar-winning star had always "looked up to" the 'Titanic' actress, she still felt very relaxed in her company.

She said: "We had met multiple times before at festivals and parties and things like that and always got on like a house on fire.

"Me being the younger of the two, I look up to somebody like her and the career that she's had and how hard a worker she is - because she's a very, very hard worker -- and for her with me, she's been incredibly supportive, even before we did 'Ammonite'. Kate's always been in my corner.

"The whole notion of her being Rose in 'Titanic' kind of goes out the window when you meet her.

"I always felt very relaxed with her, and I think that's when you do your best work."