(Cover) - EN Showbiz - Natalie Portman and Mila Kunis have called their lesbian sex scene awkward.

The actresses filmed the raunchy footage as part of their new film Black Swan, director Darren Aronofskys thriller about ballet dancers.

Both stars admitted the task was difficult because it was so unusual. Natalie, though, said that the pair simply got on with their jobs.

It was awkward and we laughed. It was strange, but its something you just sort of throw yourself into, she told E! Online.

Mila shared this view, but suggested that part of the film was just the same as it would be in any movie regardless if it was with a man or a woman. Its as awkward as any sex scene. Theyre always going to be a little awkward, the 27-year-old remarked.

Natalie, meanwhile, rejected rumours that her father had been aghast over the girl-on-girl scene.

The 29-year-old said her parents enjoyed the film and that made her happy.

My parents saw [the movie] and they loved it. I was so honoured because theyre the ones I care about most, she explained. I was completely nervous while they were watching it and they really loved it. (C) Cover Media