Fans of big screen beauties Natalie Portman and Mila Kunis are set for a sexy treat in the pair's upcoming movie - they'll reportedly engage in an explicit sex scene.

The actresses have signed on to play ballerinas in Darren Aronofsky's dark new thriller Black Swan, and they'll send temperatures soaring in one particular scene, according to website ScriptShadow.com.

A source reveals the racy scene is "not just nice sweet innocent sex," adding, "We're talking ecstasy-induced hungry aggressive angry sex."

Kunis has refused to confirm or deny the reports, telling Collider.com, "I can't really deny or confirm (anything) because I'm not allowed to talk about the script, but all I'm going to say is that I can't imagine anyone getting their hands on this project. The script is so under lock and key that I can't imagine anyone really truly ever getting a hold of it."

Image © Albert L. Ortega / PR Photos

(This news article provided by World Entertainment News Network)