Angelina Jolie pregnant with twins?

Angelina Jolie is rumoured to be expecting twins with partner Brad Pitt.

The couple were recently reported to be planning to adopt another girl from Africa, but it is now believed that Jolie is pregnant.

A source told Star magazine: "Brad and Angelina are absolutely ecstatic, but I still think there will be more adoptions to come."

Jolie drank water all evening at the recent Critics' Choice Awards, and has also cancelled a forthcoming trip to Europe.

The actress already has biological daughter Shiloh with Pitt, as well as adopted children Maddox, Pax and Zahara.

Pitt's publicist refused to comment on an "unsubstantiated rumour".