Angelina Jolie and partner Brad Pitt may extend their family by adopting another child, the actress has hinted.

The Tomb Raider star and Pitt are now parents to six children, with Jolie having given birth to twins Knox Leon and Vivienne Marcheline.

The couple were already parents to four children together - adopted children Maddox, seven, four-year-old Pax Thien and Zahara, three, and biological daughter Shiloh, 22 months - when the twins were born in July.

But despite the twins' birth increasing the size of their brood, the Jolie-Pitt clan could still grow, the actress revealed.

"It depends," she told NBC's Matt Lauer. "I mean it's important... you can't adopt, you can't even start the process until any new children are six months old to understand how the new family has settled."

She explained the children "are not really stunned anymore when kids come home".

"You know, somebody asked how Mad was doing and you know he's just, he's a professional Big Brother, he's done it so many times," she explained.

"And we prepared them, we talked to them about it, they knew it was coming, and they are all just at that great age that they aren't threatened, that they are independent enough not to need mommy and daddy all the time."

Jolie, an Academy award-winner, was speaking on NBC's Today show while promoting her new film Changeling, released in the UK on November 28th.

17/10/2008 09:17:58