Angelina Jolie Files to Give Brad Pitt's Name to New Son

By Ken Lee

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.