A source close to the actress has confirmed the 32-year-old is expecting twins with her partner Brad Pitt. Angelina is planning to sell confirmation of the news and donate the money raised to charity, according to Us Weekly magazine.

The 'A Mighty Heart' star - who has three adopted children, six-year-old Maddox, four-year-old Pax and three-year-old Zahara, and a 19-month-old biological daughter Shiloh with 'Fight Club' actor Brad - did nothing to dispel pregnancy rumors by wearing a flowing vintage Hermes dress to the recent Screen Actor's Guild (SAG) Awards in Los Angeles.

One onlooker said: "It was so obvious she was pregnant. You could clearly see the outline of the bump."

The couple - who met on the set of 2005 film 'Mr. and Mrs. Smith' - has never hidden their desire to expand their brood. When Angelina was asked last year how many children she would like, she replied: "It fluctuates between seven and 13 or 14. Four is kind of kicking our a**, but we kind of feel like, damn it, we're up for the challenge!"

Brad added: "I think we'll c**p out somewhere between seven and nine."