Soccer ace David Beckham is wearing tight underwear in a bid to increase his chances of conceiving a girl with wife Victoria.

The couple - already parents to Brooklyn, 8, Romeo, 4, and two-year-old Cruz- have made no secret of their hope of having a daughter.

And the LA Galaxy star reveals the lengths he is willing to go to have a girl.

He says: "I'll be changing my diet and wearing tight pants (underwear)"

Beckham also reveals his hopes for a large family, adding: "It's lucky we wanted around the same number. We both want four or five."