Brad Pitt & Sienna Miller Flirty Cheating Scandal, Angelina Jolie 'Stay Away' Divorce Warning?

Brad Pitt's currently producing the highly-anticipated action flick "The Lost City of Z" starring Robert Pattinson, Charlie Hunnam, Tom Holland, and gorgeous English model Sienna Miller. So, why is longtime wife Angelina Jolie so agitated?

Apparently, 51-year-old Pitt is completely "infatuated" with Miller's beauty and passion. And obviously, Jolie's totally jealous.

Right...

According to the seedy gossip tabloid InTouch, Pitt recently planned a visit to the Northern Ireland movie set, but his "By The Sea" sweetheart blatantly wouldn't allow it. An alleged insider explains:

"Angie told him flat out, 'You're not going.' She's heard Brad bring up Sienna's name almost every day since the film went into production in August... Sienna really gets under [Jolie's] skin."

Funny - rumors also suggest that Miller indulged in a quick "fling" with 29-year-old Pattinson while filming (he's currently engaged to aspiring songstress, FKA Twigs). So, is the blonde bombshell truly a sly home-wrecker?

Well, Miller's rather flirtatious personality supposedly ignited another huge fight between Brangelina:

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

Do MstarsNews readers think this beloved Hollywood "power couple" is now on the brink of divorce?

Back in July, the same unreliable publication insinuated that Pitt wished to end their marriage because of Jolie's controling ways:

"He's told Angie it's over," the source reveals. "He's beyond miserable and wants out... He's come to resent the power he's allowed her to have over him. She was bossy and demanding and humiliated Brad in front of the cast and crew a number of times... [It] pushed Brad over the edge [and] made him think that getting married was a huge mistake - instead of bringing them together, it drove them further apart."

Simply not true.

Another "legit" source tells GossipCop that this angry "saga" over the "American Sniper" starlet "never happened." Pitt and 40-year-old Jolie are still happy together.

Meanwhile, "The Lost City of Z" hits theaters sometime in 2016.

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