Jolie and Pax
Lester Cohen/WireImage; STR/AFP/Getty
04/24/2007 at 07:50 PM EDT
Angelina Jolie has formally asked a Santa Monica court to change her newly adopted son's name to Pax Thien Jolie-Pitt.
Her request to add partner Brad Pitt's surname came in an April 16 filing in Superior Court.
Pax, 3, was adopted from a Vietnamese orphanage
in March, joining Pitt and Jolie's three other children, Maddox, 5, Zahara, 2, and Shiloh, 10 months.
Because Vietnamese law makes it difficult for unmarried couples to adopt, Jolie applied solo, and the boy's name became Pax Thien Jolie.
In January 2006, after Jolie made a similar request in the same court, her other adopted children, Maddox and Zahara, were officially named Jolie-Pitt