The star, who has an adopted son, Maddox, an adopted daughter, Zahara, and a biological daughter, Shiloh, said looking after her brood is her top priority.

"I have four children and taking care of the children is the most important thing for me at the moment. I am very proud and happy to be their mother," she said.

Angelina, who wasn’t accompanied to Vietnam by partner Brad Pitt, is now making plans to bring her new son home to the US.

Angelina to apply for visa for new son - Mar 20 2007
Angelina Jolie has arrived in Hanoi to complete the procedures necessary to take her adopted Vietnamese son to his new home in the United States.

The actress flew to Hanoi from Ho Chi Minh City after adopting three-year-old Pax Thien at an orphanage on the outskirts of the city last week.

She checked into Hanoi’s historic Metropole Hotel at about 5.30pm local time.

The superstar dodged reporters on her way to and from the airport and slipped into the hotel through a basement entrance.

Angelina is expected to meet with US Embassy officials tomorrow, when she will apply for a visa for Pax.

The star filed adoption papers as a single parent, because she and her partner Brad Pitt are not married.

The star already has three children with Brad Pitt - five-year-old Maddox, adopted from Cambodia, two-year-old Zahara, who was adopted from Ethiopia, and baby daughter, Shiloh, who was born to the couple in May.

Angie’s new son bewildered by adoption - Mar 19 2007
The latest addition to Angelina Jolie’s brood burst into tears when he was formally handed over to his glamorous new mum, apparently unaware that he was being adopted.

The three-year-old boy, now named Pax Thien Jolie, began crying when Angelina knelt down to speak to him during Thursday’s welcome ceremony at Tam Binh Orphanage in Ho Chi Monh, according to orphanage director Nguyen Van Trung.

"She told me she understands - that it’s normal for all young children to be scared," Trung told People magazine.

Pax, who’s been described as a happy but shy child, had good reason to be bewildered by all the attention, as staff had avoided telling him about the adoption ceremony, fearing it would upset him.

"We did not say anything to him, afraid we might put pressure on him and more frightened," the boy’s main carer at the orphanage, Bui Thi Thanh Tuyen, told the magazine.

"We just told him that we are taking him out. You are going to play outside - play with a mother and father."

Pax, who was equipped with a small box containing two sets of clothes and his favourite toys, soon cheered up after being led into a private room to bond with his new mum.

"Later he was OK, very cheerful and happy. He even played with his new brother Maddox," added Nguyen.

"We are glad that he’s adopted. He’s very clever and I hope he has a good life," Bui said, adding that she’ll miss him. "We just hope he will return to visit us one day."

Angelina worried about paparazzi - Mar 16 2007
Angelina Jolie is worried that the media frenzy surrounding her latest adoption will upset her new son, it’s been reported.

The actress picked up three-year-old Pax Thien from Tam Binh orphanage in Vietnam yesterday, with countless photographers trying to snap every minute.

In an interview in today’s Ho Chi Minh City Law newspaper, published by the city’s justice department, Angelina was quoted as saying: "Photographs and press coverage will make him (Pax) upset. I’m very worried about that.