Angelina Jolie, Brad Pitt Divorce: Celeb Dad Looks Sexy With New Look, Sienna Miller Slams Brad Pitt Flirtation Rumors [Photo]

Brad Pitt reveals a new hairdo, which is a bit unexpected but makes the actor looks "so much more dignified," according to a report from Huffington Post. For months, the "Fight Club" star has been hiding his hair from the public eye by wearing a hat, even in their latest photoshoot with Vogue together with the whole Brangelina clan. However, last week, Pitt steps out without a hat and stuns everyone with his new silver hair. See his new hair color here. 

According to the news outlet, Pitt has let go of his bearded scruffy look and has died his hair gray for his latest film project, the "War Machine." In the film, the 51-year-old actor plays the role of a four-star general based on Gen. Stanley A. McChrystal. Per Bio., McChrystal is known for leading the Joint Special Operations Command in Iraq during the Persian Gulf Wars. The 61-year-old general also served as the top Commander of American forces in Afghanistan.

Deadline reports that "War Machine" is a "satirical comedy" directed and written by David Michod and will be distributed by Netflix. It is inspired by the book "The Operators: The Wild And Terrifying Inside Story Of America’s War In Afghanistan" by the late Michael Hastings.

Ted Sarnados, chief content officer of Netflix, said, "War Machine is a rip-roaring, behind-the-facade tale of modern war decision-makers, from the corridors of power to the distant regions of America’s ambitions. Brad and David are a perfect team to make this timely, compelling and entertaining film.”

Meanwhile, Sienna Miller slams the rumors of her and Pitt getting flirty in the set of "The Lost City of Z." Sienna stars in the said film while Pitt acts as the producer. According to a report from Pulse, citing a source from In Touch Magazine, Angelina Jolie is apparently jealous with Sienna and has forbidden his husband to visit the set of "The Lost City of Z" in Northern Ireland.

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

Gossip Cop was quick to deny the rumor, saying that the incident between Jolie and Pitt "never happened." Recently, Sienna also slammed in an interview on American radio show “Sway.”

Sienna revealed, as quoted by Vogue, "I haven't really read too much about it, but break it down, let's clear it up. So the truth about that rumor is that Brad Pitt is producing the movie that I just wrapped but I haven't seen him. He's not been to the set, he's a producer on the film and I've met him twice, and yeah, it's insane."