Think batdaddy! Christian Bale is set to become a dad for the second time!

Former model Sandra 'Sibi' Bale, 43, displayed a fuller figure as she accompanied The Dark Knight star to the Oscars in Hollywood on 2 March, and now it's been revealed she is pregnant with a sibling for their daughter Emmeline, who turns nine this March.

A rep for the 40-year-old star has declined to comment but it looks baby is set to make four for the Bales.

Christian and Sibi married in 2000.