New rumors claimed that Angelina Jolie is allegedly worried over Brad Pitt's loyalty to her now that he's working with Sienna Miller on a movie.

Though Brad Pitt purportedly haven't cheated on her wife yet, Angelina Jolie is allegedly convinced that her husband could fall for the actress with whom he's working with in "The Lost City Of Z."

"Angelina has heard Brad bring up Sienna's name almost every day since the film went in to production in August," In Touch reported, as quoted by Celeb Dirty Laundry.

"Brad told her to let him do his job as a producer, and Angelina yelled that she didn't want him near Sienna. They barely spoke to each other the next day."

Fans speculate whether Angelina Jolie is just paranoid or if she's on to something, especially since she and Brad Pitt first got close on the set of "Mr. & Mrs. Smith," back when the actor was still married to Jennifer Aniston.

Does Angelina Jolie relate to Jennifer Aniston, now that her husband purportedly has a tendency to cheat on the actress he's working with?

There may be a couple of complications to support this theory. First, it hasn't been confirmed yet that Brad Pitt and Sienna Miller are indeed getting close to each other on the set of their movie, "The Lost City of Z."

Secondly, despite rumors that Brad and Jennifer Aniston broke up because the actor allegedly cheated on the former "Friends" star, Jen has previously stated that she should not be painted as the rejected ex-wife of Brad Pitt.

"We're not in daily communication," Jennifer Aniston told The Hollywood Reporter earlier this year. "But we wish nothing but wonderful things for each other. Nobody did anything wrong. You know what I mean? It was just like, sometimes things [happen]."

As for the current condition of Angelina and Brad's marriage, it seems that the couple is doing fine despite rumors that they could be fighting because of Sienna Miller.

In fact, Brangelina is allegedly in the process of adopting a Syrian child, to add to their brood of six children.