Anna Kournikova and Enrique Iglesias welcome twins

Anna Kournikova and Enrique Iglesias have welcomed twins, it has been revealed.

The former pro tennis player and superstar singer, 42, kept the pregnancy a secret.

The boy and girl - named Nicholas and Lucy - were born at the weekend in Miami, TMZ revealed.

Anna and Enrique are notoriously secretive about their relationship and haven't been seen together in public for nearly a year.