Mr. maid of honor?
A source close to the A-list couple confirms the news with British publication Heat.
"James was thrilled to accept his little sister's offer," the source said. "Angie has always related to men better than women."
Why exactly is did Angie pick a boy for the role? Or – more importantly – why exactly would James accept?
Well… Turns out they’re pretty tight.
Angelina and James have been besties throughout their whole lives. The brother has remained supportive of his sister throughout her career so standing by her side at the wedding too just made sense.
The brother-sister duo have been spotted walking the red carpet together, including in 1998 for “Gia” and again in 2001 for Original Sin.
In 2000, they took their close relationship one step further, famously locking lips during the Academy Awards.
At 39, James is two years her elder.
But, let's face it, Angelina is by no means a girly girl. In fact - according to reports - she has always tended toward boys when it comes to forming long-term friendships.
"As well as growing up with James, she bonded more with the jocks than the cheerleaders in high school," the source added.
Brad and Angelina announced their wedding-to-be in April when the Tomb Raider star debuted her new mega-rock engagement ring. But, since then, they have held off on slipping any official wedding dates.
The beautiful couple is currently stationed overseas as Angelina films for her new role in the Disney epic Maleficent.