Angelina Jolie is planning to adopt for the fourth time, it has been claimed.The actress - who recently adopted Vietnamese son Pax Thien, and also has a Cambodian son Maddox and Ethiopian daughter Zahara - reportedly wants to adopt a girl from Chad to "balance the family".A source discussing Angelina's family - which also consists of Cambodian son Maddox, Ethiopian daughter Zahara and Angelina's natural daughter Shiloh with lover Brad Pitt - said: "Angelina and Brad want to make sure Zahara doesn't feel alienated as the only black face in their family."She feels the children need a balance of faces in their life."Angelina is said to have fallen in love with a one-year-old girl from Oure Cassoni and asked her lawyers to begin the adoption process.The source added to Britain's News of the World newspaper: "She is hoping to have her daughter home by the summer."Angelina, 31, recently hinted that she wanted to have a balanced family.

She said: "Should you balance the races, so there's another African person in the house for Zahara, after another Asian person in the house for Mad? We think so.

"Shiloh has Brad and me to look at."

Meanwhile, three-year-old Pax's mother Pham Thu Dung, 29, has spoken of her heartache at losing her son.

Dung said: "He is better off with a movie star because I am not a good mother. I wasn't able to take care of my baby, I left him."

Pax was abandoned in hospital when he was two days old because Dung couldn't afford to pay his £15 medical bill.

She added: "My dream is that one day he'll visit me and call me mother. But it's only a dream. I know it is impossible."

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