Hollywood couple Angelina Jolie and Brad Pitt may be welcoming another child into their large family.  

An alleged charity worker told Woman's Day that the couple are preparing to adopt a two-year-old boy from Syria named Moussa.

Jolie, 39, reportedly met the child during one of her trips to the war torn country as part of her work as special envoy of the United Nations High Commissioner for Refugees.

"Angelina heard about him from a translator and she was obviously upset, but Moussa was just beaming from ear to ear and when he saw she was wiping tears from her eyes he toddled up to her and gave her a hug and it was a very emotional moment and everyone was suddenly laughing and smiling," the anonymous charity worker said. 

"She kissed him on the top of his head and then they were basically inseparable for the rest of the visit."

Pitt and Jolie have three adopted children: Maddox, 13, from Cambodia, Pax, 11, from Vietnam, and Zahara, 10, from Ethiopia.

In addition, the stars have three biological children: Shiloh, 8, and twins Knox and Vivienne, 6.

In a New York Times op-ed, the actress wrote that the plight of Iraqi refugees has worsened under the terrorism of the Islamic State. 

"I have visited Iraq five times since 2007, and I have seen nothing like the suffering I'm witnessing now," she wrote in the article titled, "A New Level of Refugee Suffering".

"For many years I have visited camps, and every time, I sit in a tent and hear stories. I try my best to give support. To say something that will show solidarity and give some kind of thoughtful guidance," she continued.

"On this trip I was speechless."

Jolie has also raised awareness of the debilitating effects of sexual violence as it relates to the persecution of marginalised groups. 

At the recent interfaith conference in London, she asked religious leaders to condemn the violence, support the victims, and work to remove the stigma of the assaults. 

"Our most powerful assets are not our armies," she told the group. "They are our values. As faith leaders you are advocates for the values of compassion, tolerance, justice and reconciliation.

"We have to speak more loudly than those preaching hatred as religion. I believe we can."