Happy Birthday, Pax Jolie-Pitt!

Pax Thien Jolie-Pitt celebrates his 4th birthday today!

He’s the second oldest of Brad Pitt and Angelnia Jolie‘s four kids. Pax was born in Vietnam on November 29, 2003 and was adopted by Angie on March 15, 2007.

Angelina once revealed that her late mother, Marcheline, chose the name Pax before she passed away. “She loved that name,” Angie said. “He came home, and I couldn’t call her.”

She has also said that Pax is the wildest person in the house and has trouble getting him fully dressed. Angie has said, “I’m still having trouble convincing Pax that underwear and pants go together – underwear is not pants!”

She added, “Today was Pax‘s second day of school, and the teachers told me that when they went out in the playground, Mad came over to his brother and pulled him around in a wagon. Then later he was crying and Mad patted him on the back. Maybe it sounds like a little thing, but as any parent knows, that was huge news. I called Brad at work. So it’s moments like that where you think, ‘Oh, I might be okay!”’

HAPPY BIRTHDAY, PRINCE PAX!

20+ pictures inside of Pax Jolie-Pitt…