02/21/2008 AT 03:30 PM EST
It's official: Brad Pitt
and Angelina Jolie
of 4-year-old Pax Thien Jolie-Pitt was approved Wednesday by an L.A. County Children's Court judge, her rep confirms to PEOPLE.
reported Thursday that the happy family celebrated at the courthouse in Monterey Park on Wednesday. Jolie adopted little Pax from an orphanage in Vietnam last year, telling PEOPLE at the time, "You can imagine what courage it takes to be in all new surroundings, with new people and a new language. He is very strong."
And for more evidence of Pax's strength, check out his moves on the inner tube
during the family's recent snow day.