The couple, who have never spoken about their relationship, have been the subject of fierce speculation over recent weeks after sources claimed Jolie was expecting.
Jolie has kept tight-lipped until yesterday (10JAN06), when she told a charity aid worker in Santo Domingo, Dominican Republic, "Yes, I am pregnant." The actress is in the country filming new movie THE GOOD SHEPHERD, and helping local charities.
Representatives for both Pitt and Jolie have since confirmed the pregnancy, according to People magazine.
Jolie, who is already mother to adopted son MADDOX, four, and daughter ZAHARA, one, recently spoke of adopting again. She said in October, "There's something about making a choice, waking up and travelling somewhere and finding your family."
Pitt recently began procedures to adopt Maddox and Zahara and have their surnames changed to Jolie-Pitt.