The actress, who has been dating actor Josh Hartnett since hooking up on the set of The Black Dahlia, was reportedly recorded orally pleasuring her man in a parked car. The pair's sexual exploits starting with sweet talk and ending with the low-voiced female actress encouraging her lover's progress. Passionate kissing and rustling as the man undoes his clothing is also heard on the audio tape of the interlude, which is being sold on the Internet for $26.

A cryptic clue has reportedly established Scarlett as the leading lady. The hint- that the actress could be known by a red letter "A", known as "the scarlet letter" – has hinted the Lost In Translation star is on the tape.

The blonde beauty, who has topped FHM's and Esquire magazine's Sexiest Women lists this year, is renowned for her liberal views. She says, "If you're comfortable with yourself, then it's sexy. Maybe people think I look sexy because I feel sexy. I am a liberated person. I'm very comfortable with my sexuality," adding that her best assets are her breasts. "I'm proud of my 'girls'. They're my charms, my feminine wiles."