Brad Pitt has slammed reports his girlfriend Angelina Jolie is pregnant with their second child.

American magazine In Touch Weekly's front page story claims the Tomb Raider actress, 31, is sporting a "telltale bump" - three months after giving birth to her first biological child Shiloh Nouvel.

Pitt and Jolie also have two adopted children, Cambodian Maddox, four, and Ethiopian Zahara Marley, 20 months.

However, the Fight Club actor's spokesperson told the New York Daily News: "It's so stupid. That magazine is a joke."