Scarlett Johansson

Hollywood beauty Scarlett Johansson has landed the lead role in the X-rated biopic of the world's biggest porn star.

The 22-year-old was personally picked by Jenna Jameson to chart her transformation from ballet dancer to stripper, before making it big in the adult film industry.

Jameson says of her casting, "I tapped up Scarlett for the part and I'm very excited about the film.

"It was my decision not to play the role because I've lived that tale already and anyone can play themselves."

The movie will be based on Jameson's best-selling autobiography, How to Make Love Like a Porn Star.