Jolie seeks to add Pitt to new son's name

LOS ANGELES (Reuters) - Actress Angelina Jolie has filed court papers to add boyfriend Brad Pitt's last name to that of her newly adopted son, Pax, documents showed on Tuesday.

Jolie, who adopted Pax Thien Jolie from a Vietnamese orphanage in March, filed a petition in Los Angeles County Superior Court that would change the 3-year-old boy's name to Pax Thien Jolie-Pitt.

The filing, a formality required to legally change the boy's name, was first reported on the celebrity Web site TMZ.com.

Pitt has a daughter, Shiloh, with Jolie and has become the adoptive father of her other two adopted children, 5-year-old son, Maddox, from Cambodia, and 2-year-old daughter, Zahara, from Ethiopia.

Shiloh, Maddox and Zahara already share the last names of Jolie and Pitt, though the couple has not married and say they have no plans to wed.

The 31-year-old Oscar-winning actress co-starred with Pitt in "Mr. and Mrs. Smith."

Jolie's representatives have explained that she adopted Pax as a single mother from Vietnam because that country does not permit unmarried couples to adopt children.