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

Jenna Jameson says "500 sit ups a day" made giving birth easy. The former adult movie star - who welcomed twins Jesse Jameson and Journey Jette into the world on March 15 - boasts her strong stomach muscles aided the fast delivery.

She wrote on her MySpace blog: "I was blessed with a very easy labor, it lasted about 2 hours. When it came to pushing them out, I truly believe the 500 sit ups a day paid off. I was able to push my 5 pound Jesse out in 5 pushes. Journey who was 4lb 11oz was out in 3 pushes."

Jenna Jameson has named her twins. The former adult film star and mixed martial arts fighter Tito Ortiz - who welcomed the boys into the world on Monday - have named their babies Jesse Jameson and Journey Jett.

The 34-year-old blonde beauty gave birth at California's Newport Beach hospital and said she was "thrilled" to become a mother.

Jenna Jameson has given birth to twin boys. The retired adult movie star and her mixed martial arts fighter boyfriend Tito Ortiz welcomed their sons into the world on Monday at California's Newport Beach hospital.

Jenna's representative said: "The babies are in very good health. Both Jenna and Tito are delighted, they couldn't be happier."