Angelina Jolie and Brad Pitt's adoption of Pax Thien Jolie-Pitt has been formally made official by a Los Angeles court, according to news reports.

Angelina adopted the now 4-year-old in March of 2007, in Hanoi, Vietnam. Pax has lived with the couple and their three other children for nearly a year, Angelina's rep confirmed to People magazine.

On Wednesday a Los Angeles County Children's Court judge approved legally made Pax a member of Jolie and Pitt's family. Jolie adopted Pax from an orphanage in Vietnam last year while she was visiting the country.

The adoption had to first be approved in Vietnam.

Ever since she was young, she has wanted to adopt children, Jolie said in an interview published last year in a Vietnamese newspaper.

Everyone would agree that children need to have a family, the paper quoted the Oscar-winning actress as saying. I have the ability to help children fulfill that desire. Why should I say no?

Jolie's oldest child, 6-year-old Maddox, was adopted from Cambodia and Zahara, 3, who was adopted from Ethiopia. The Hollywood couple have 21-month-old Shiloh, their biological daughter who was born in May 2006.