The Hollywood couple - who welcomed twins Knox Leon and Vivienne Marcheline into the world on July 12 - have six children, but are determined to continue expanding their brood.

A source said: "Angelina wants one more baby naturally - even if they end up having twins again. Twins would be wonderful. A dozen kids would be their dream."

Angelina Jolie and Brad Pitt reportedly conceived their twins using in vitro fertilization.

The couple - who welcomed Knox Leon and Vivienne Marcheline into the world on July 12 - were reportedly so desperate to add to their ever-expanding brood they turned to IVF infertility treatment in a bid to conceive.

Angelina Jolie has been told to pile on the pounds for her latest film role.

The 33-year-old actress must gain up to 28lbs by the bosses of 'The Thomas Crown Affair 2' - who she also worked with on her last movie 'Wanted' - because they are desperate to avoid her fainting on set as she did while filming the assassin thriller.

Only five days after Angelina Jolie gave birth to twins Knox Leon and Vivienne Marcheline, the newborns are meeting other family members. Jolie's brother, James Haven, was spotted arriving at Nice's Hospital Lenval for a visit Thursday.

Haven, who was wearing a baseball cap over his eyes, was accompanied by two bodyguards. He was driven into the hospital's emergency area entrance at 10 a.m. Thursday in a Mercedes van with blacked out windows.

Angelina Jolie and Brad Pitt will have a "handful" with their newborn twins, says the actress' father Jon Voight.

Jon thinks the couple - who welcomed their fifth and sixth children into the world in France on Saturday - will find coping with the new family members tough.

Many are wondering why the media is willing to shell out millions of dollars just for the first shot of Hollywood's newborns, but perhaps the answer lies with the public themselves.

Now that the much-awaited birth of the Brangelina twins has finally arrived, the public only has speculations as to how much Knox and Vivienne's first public photo op would cost a willing publication. After all, their big sis Shiloh had commanded a staggering $4.1 million from People Magazine and another $3.5 million from Hello! for the British rights.