Angelina Jolie and Brad Pitt's son Pax has reunited with his biological grandmother.

The couple arranged for the eight year old - who was adopted from an orphanage near Ho Chi Min City, Vietnam, in 2007 - to spend time with his grandmother Nhan Dung when the Jolie-Pitt family took a recent trip to the exclusive Six Senses resort in Con Dao, South East Vietnam.

An insider told Us Weekly magazine: "It was a one day visit. Nhan was looking forward to it after Pax had lived so many years abroad."

Angelina - who also raises Cambodian-born Maddox, 10, and Ethiopian orphan Zahara, six, as well as biological kids Shiloh, five, and three-year-old twins Knox and Vivienne, with Brad - recently revealed her brood are keen to learn about each other's cultures.

She said: "They are all learning about each other's cultures as well as being proud of their own.

"So it's not like just the boys get to do the Asian thing. They all have their flags over their beds and their individual pride."

Meanwhile, Brad and Angelina have employed specialist teachers to ensure their children don't forget their native tongue.

Angelina recently explained: "We have teachers who teach Cambodian and Vietnamese in our house and they know their flags, their music and quite a lot about their culture. We bring in as much as we can."