"Oscar is particularly close to Shiloh and Knox," an insider dished to the publication.
"But all the kids love him. He's mature and conscientious, but also knows how to get on their level and make them feel heard and important."
Angelina and Brad's custody trial came to a head as a surprising last-minute witness is considering giving testimony that could prove explosive.
New Idea has learnt that after a bitter feud with his famous sister, James Haven could testify against Angelina.
“Angelina and James had a huge falling out after she sacked him from being her head nanny and they’ve barely spoken since,” a close source reveals.
“Now James is preparing to get his revenge and stand up in court, with a string of damning accusations he says could ruin her entire career.”
According to Us Weekly, Brad was desperate not to put the kids through the ordeal of testifying in court, but with Ange pushing for sole custody, he felt his only hope of gaining access to the kids was to bring James to the stand. And his revelations could mean Angelina will lose the children for good.
“James has details about how Angelina tried to sabotage Brad with sly tactics and a stream of lies,” adds the source/
James will also talk about how his sister attempted to undermine Brad’s access to their children – Maddox, 17, Pax, 14, Zahara, 13, Shiloh, 12, Vivienne and Knox, 10 – since their September 2016 break-up.
Earlier this year she was scolded by the LA County Superior Court and ordered to allow the children more access to Brad or risk losing them.