Allison Williams "didn't want to show her vagina" when she took on her role in 'Girls'.

'Girls' cast for The Hollywood Reporter

'Girls' cast for The Hollywood Reporter

The 28-year-old actress plays Marnie Michaels in the HBO comedy drama - which will air its final season next month - and despite its racy nature, the show's creator Lena Dunham has said there were reservations about stripping down as she didn't "want to do nudity".

Speaking to The Hollywood Reporter magazine ahead of the show's final season, Lena - who also stars in the programme as Hannah Horvath - said of her decision to cast Allison: "I called Allison before we cast her, and I asked her how she felt about nudity. She said, 'I don't want to do nudity.'

"I was like, 'We have to get back to you. I'm gonna be naked, people are gonna be naked -- that's a big part of what this show is.' She told us she wasn't scared of sex, she just didn't want to show her vagina, her nipples or her butt -- and she never did."

And whilst Allison managed to get away without showing her naked body to the viewing public, she did end up with "someone's face to [her] butt" which she says catapulted her into the headlines.

She said: "So instead, they bent me over a counter with someone's face to my butt. It's funny because my character actually had the vast majority of sex on the show, but it just doesn't stick to me.

"People are like, 'So you've never had sex in the show, have you?' I'm like, what do I have to do? I've literally had someone in my butt. And with that scene, the headlines were all, 'Brian Williams' daughter gets her salad tossed.'

"Well, no, not to reveal too much, but that is definitely not something I'm interested in, and it's definitely never happened to me in real life. But the media often decides when to believe us as characters and when to just portray us as ourselves."

Meanwhile, Adam Driver - who plays Adam Sackler on the show - admitted he took on his role in the production as he thought it would be "fun" to portray someone who was "morally questionable".

He said: "I was doing a play at the time, so I was feeling very self-righteous. I thought that that was what I should be doing, and TV was for evil people, and I didn't want to be part of any system or corporation.

"But because it was HBO, it seemed different. And then the writing was so good, and I thought it would be fun to play someone who does these things that are morally questionable."