Actress Yael Stone had no idea what she was doing when she shot her first sex scene in 2001 Tv drama The Farm, because she was still a virgin in real-life.

The Orange Is the New Black star was a young teenager when she filmed the racy love scene for the miniseries, which featured her character getting intimate with an older man, and she admits the shoot required a lot of imagination on her part.

During a candid chat with The Huffington Post, she reveals, "I've never said this, but I did my first sex scene before I'd actually had sex in real life...

"A lot of times we create roles and there are experiences we haven't had but we have to imagine it. I happened to do that as a young 15-year-old person."

Stone, who was born in 1985, has since become more comfortable stripping off onscreen and claims she has no problem filming sex scenes for prison drama Orange Is the New Black.

The actress, who portrays inmate Lorna Morello, says, "The sex scenes are also a privilege, and we have to see it that way. If it's written by great people - these people that write the show are really smart, we can trust them - I do feel like those scenes are really necessary. It's a big part of (prison) life. It's a big part of our lives as human beings."