According to E!/msn today

Scarlett, who, if you believe the British tabloids, has signed on to star as porn queen Jenna Jameson in the adaptation of her best-selling and surprisingly well-reviewed autobiography, "How to Make Love Like a Porn Star: A Cautionary Tale."

"I tapped up Scarlett for the part and I'm very excited about the film," the alarmingly attenuated and much-altered sex siren is quoted as telling Britain's Daily Express. "It was my decision not to play the role because I've lived that life already and anyone can play themself."

Uh-huh.

While Jameson has gushed for months that the A-list beauty-cum-Woody Allen muse would be the perfect choice to headline her lurid tale of sex, drugs and award-winning girl-on-girl action (hey, she's a member of the prestigious X-Rated Critics Organization Hall of Fame), it looks like she's barking up the wrong bombshell.

Johansson denies any and all involvement in the sure-to-be skin-heavy flick.

"There is no truth to this," Johansson's spokesperson, Marcel Pariseau, pooh-poohs to MSN Entertainment. "Scarlett has never seen a script nor been approached about this project. She also has no interest in playing this role. It is wishful thinking on the part of Ms. Jameson."