New mom Jenna Jameson strips off

Jenna Jameson has posed for Playboy magazine just four months after giving birth to twins.

The retired adult film star showed off her super-slim post-pregnancy body at a provocative photo shoot for the racy magazine last week.

The 35-year-old blonde beauty - who has twin sons Jesse Jameson and Journey Jett with mixed martial arts fighter Tito Ortiz - has had a busy week.

As soon as her Playboy shoot wrapped, she rushed to a Los Angeles studio to film a new advertisement for PETA's (People for the Ethical Treatment of Animals) upcoming McCruelty campaign against fast food giant McDonald's.

The 30-second film sees Jenna posing in a sexy strapless dress while describing the company's slaughter of chickens.

She says: "Chickens killed for McNuggets are slammed into metal shackles. Spinning blades meant to cut their throats often tear through their wings or bodies instead.

"Many birds survive this terrifying, painful process, only to be scalded to death in de-feathering tanks. There's a less cruel method of slaughter that renders chickens unconscious, but McDonald's chooses to allow birds to be mutilated and scalded instead."

Jenna's advertisement is due to air in September.

She has previously appeared in the animal rights group's campaigns against Kentucky Fried Chicken and the use of fur and leather in fashion.