Jolie and Pitt – Us' Couple of the Year – have been vocal about wanting more children.

Pitt said last month, "we're just getting started."

"Dedicated, kids first," Pitt has said of Jolie as a mother. "She's really inventive and great fun to them and very, very protective."

Last summer, when Jolie was asked how many kids she'd like to have, the actress responded, "Hmm, it fluctuates between seven and 13 or 14... Four is kind of kicking our ass, but we kind of feel like,  we're up for the challenge!"

"I think we'll crap out somewhere between 7 and 9," Pitt has said.

Jolie's estranged father, Jon Voight, recently said, "It's wonderful news... if that's true."

Pitt and Jolie have been together since early 2005.