Angelina Jolie filed for divorce from Brad Pitt on Monday, just two years after the couple wed at their French estate Chateau Miraval. But signs of the Hollywood couple’s crumbling marriage may have been evident as far back as last October, when they visited Legoland theme park in Windsor. In previously unseen pictures, Brad, 52, and Angelina, 41, appear to be in the midst of a heated argument in front of surprised onlookers and their children Shiloh, Knox and Vivienne . Their three other children, Maddox, 15, Pax, 12, and Zahara, 11, were also in tow. Visitors said the couple appeared ‘stern-faced’ and ‘didn’t look happy’.