People magazine will definitely be publishing Angelina Jolie and newly adopted 3-year-old son Pax Thien Jolie on this week’s cover, out this Friday.

But Hello! magazine’s readers will be able to pick up their copy this Thursday. Angelina tells Hello!, “He is a very serious, very sweet little boy.”

Here’s the press release from Hello!:

When they pick-up the copy of Hello! arriving on newsstands starting this Thursday, Hello! readers will catch an exclusive and intimate glimpse of Angelina Jolie as she arrived in Vietnam to pick up her new adopted son Pax Thien last week.

Hello!’s breathtaking spread features young Pax playing and napping with his new siblings. As Hello!’s exclusive photographs show, he has been welcomed as the latest member of the growing Jolie-Pitt clan, able to claim as siblings a brother and two sisters and two of the world’s most glamorous activists as his parents.

Said Angelina, “You can imagine what courage it takes to be in all new surroundings with new people and a new language. He is very strong.”

Angelina Jolie carries her newly adopted son Pax Thien Jolie, 3, as she rushes to a VIP room at the Tan Son Nhat airport on Morning morning in Ho Chi Minh city, southern Vietnam.

The pair was escorted under a big umbrella held by her personal security officer Mickey Brett.

According to Us Weekly, the mother-of-four checked out of their hotel in Ho Chi Minh City at around 2 p.m. and left behind their toys to be given away to needy children.

The Oscar-winning actress and her children — Maddox, Pax, Zahara, Shiloh – are traveling to Hanoi, the Vietnamese capital, to complete the procedures necessary to take Pax to his new home in the United States.

Angelina is expected to meet with U.S. Embassy officials Tuesday to apply for a visa for 3-year-old Pax. Once the visa is issued, she can take him to L.A. She is expected to leave Hanoi on Wednesday.

How cute does Pax look wearing his hat backwards? What a punk. I love it!!

Is that Angelina’s assistant Holly Goline in the bottom-left?

Here are the adoptions papers that Angelina Jolie filed with authorities in Ho Chi Minh City, Vietnam in order to gain custody of 3-year-old son Pax Thien Jolie. The adoption agency Angelina used also issued this statement following the adoption of Pax.

Bui Thi Bich Tuyen, a nurse from Tam Binh Orphanage where Angelina adopted Pax said staff there didn’t realize she and Brad Pitt were celebrities when they first visited last year during Thanksgiving — Angelina shared crayons and drew pictures with the kids.

Said Tuyen, “They looked very much like ordinary people. We thought that they were just an ordinary couple that wanted to play with the kids and give them presents. They brought lots of toys. We could already see that she had a heart for children.”

Pax Thien Jolie’s birthday is 11/29/03.

According to Pax Thien Jolie ’s actual passport issued by the Socialist Republic of Vietnam, Pax was born Pham Quang Sang on November 29, 2003. Therefore, Pax is nearly 3 years and 4 months old. Mark your calendars now!

Angelina left a thank-you note for Tam Binh orphanage in Ho Chi Minh City, Vietnam, thanking them for taking such wonderful care of 3-year-old son Pax Thien Jolie. Angelina’s thank-you note reads:

“Thank you for taking such wonderful care of my son. He has been with you for years. I’m sure he will miss your beautiful caring staff as much as you will miss him. — Angelina Jolie“

Angelina Jolie talked with Ho Chi Minh City’s Law newspaper:

“I will stay at home to help Pax adjust to his new life. I have four children and caring for them is the most important thing for me at the moment. I am very proud and happy to be their mother. Photographs and press coverage will make him upset. I’m very worried about that. I would like to say I’m sorry for bringing this into Pax’s life. Everyone would agree that children need to have a family. I have the ability to help children fulfill that desire. Why should I say no?”

This is the passport photo of Angelina Jolie’s newly adopted 3-year-old son Pax Thien Jolie (born Truong Quang Sang) that was attached to the passport application filed at the immigration office in Ho Chi Minh City, Vietnam on Friday. The very first photos of Pax were posted here.

Angelina and Pax (along with Maddox, Zahara, and Shiloh) will fly home to Los Angeles after Pax’s passport and visa have been finalized.

Lao Dong (Labor) newspaper reports that when Angelina and Pax first met, she quickly embraced him and told him in Vietnamese “Khong sao dau, khong sao dau” (No problem, no problem) and immediately started playing with him.

Tuoi Tre (Youth) newspaper reports that Pax can count from 1 to 10 in English and his favorite foods include fried noodles and yogurt.

The adoption agency that Angelina used issued the following response to clear up rumors regarding Pax’s adoption.

“In applying to adopt 3-yr-old Pax Thien, Ms. Jolie followed the same course as all prospective adoptive parents who apply to our Vietnam program. Throughout her adoption process, which began in the summer of 2006, she has received no preferential treatment from the Vietnamese government or Adoptions From The Heart, and contrary to earlier reports, her application was not fast tracked.

Despite rumors that she chose her child, Ms. Jolie received a referral, just like any other parent adopting from Vietnam. In late 2006, she was referred a child who had been legally determined to be available for adoption and who fit within the parameters for which she had been approved to adopt. She accepted the first and only referral given to her.

In addition, we can confirm the statement given by Nguyen Van Trung, Director of Tam Binh Orphanage, that Ms. Jolie has neither made, nor promised to make, any financial contributions to his orphanage. Adoptions From The Heart celebrates the miracle of adoption with the Jolie-Pitt family, as we do with all of our clients, and wish them much joy.”

– Heidi Gonzalez, Vietnam Adoption Coordinator for Adoptions From The Heart

New reports from Vietnam are coming in that Angelina Jolie has renamed her 3-year-old adopted son from Pham Quang Sang to PAX THIEN JOLIE (soon to be PAX THIEN JOLIE-PITT).

In Latin, “PAX” means “peace.” In Vietnamese, “THIEN” means “sky.” The coolness factor pretty much matches up with the rest of the pack: Maddox, Zahara and Shiloh. PAX. THIEN. JOLIE. PITT.

But it has been confirmed that Angelina has completed procedures with Vietnamese authorities to adopt. Just one more hoop to jump through: U.S. consular and embassy officials must give approval.

In short… Brad Pitt and Angelina Jolie will soon have four children: 5-year-old son Maddox adopted from Cambodia, 3-year-old son Pax adopted from Vietnam, 2-year-old daughter Zahara adopted from Ethiopia and 10-month old daughter Shiloh, who was born to the couple in May 2006.

First picture: Pax Jolie & Tam Binh Orphanage’s director Nguyen Van Trung

Second picture: Angelina Jolie and Maddox inside the orphanage

Third picture: Angelina leaving the Tam Binh orphanage

Fourth picture: Pax Jolie stands with other children from the orphanage

Fifth picture: Pax Jolie … bound for L.A.