Jolie and Pitt to try for child

Angelina Jolie in 'Taking Lives'

Brad Pitt and Angelina Jolie are planning to try for a second child of their own, say reports.

The Mr and Mrs Smith stars have already adopted three children and have 15-month-old biological daughter Shiloh, but the pair are rumoured to be hoping to have another baby.

The Hollywood couple are allegedly researching health books to try to boost their chances of having a child by increasing their fertility.

A source close to the couple said: "They've decided the time is right to try for another baby. Brad is crossing his fingers that it will be a boy."

Pitt denied last week that the lovers were about to adopt a fourth child from Ethiopia.