ANGELINA Jolie stepped out in new York last night for her first public appearance since the birth of her twins in July. The radiant mother-of-six defied rumours that she is suffering from post natal depression to join veteran Hollywood star Clint Eastwood and actress Amy Ryan in at a dinner in New York for her new film 'The Changeling'. Wearing a belted metallic grey trench coat and high heeled black boots the actress posed happily for waiting photographers, displaying an understated but glamorous style. Earlier Angelina had appeared animated and composed as she talked passionately about the film to reporters at a press conference. The 32-year-old and partner Brad Pitt, 44, are in the city in preparation for this week's premiere of the movie. They are accompanied by their children, including two-month-old Vivienne and Knox. Brad was absent from last night's gathering, perhaps staying at home to care for their brood while Angelina enjoyed a well earned night out. Rumours that all was not well with the Pitt-Jolie family began after Brad spent a lot of last month abroad promoting his new film Burn After Reading at the Venice and Toronto Film Festivals. Angelina avoided the spotlight, instead spending her time holed up at the Chateau Miraval in Provence, France. Last month, InTouch Weekly magazine reported Angelina was in 'depression mode' following the birth of her twins. A source said: 'Angelina feels that Brad has it easy. He had the kids without the pain of birth, and he can just jet off whenever he feels like it. 'She has been staying in bed most of the time, all she does is sleep. She has little energy and has to force herself to remember to eat because she is still breast feeding.'     - Daily Mail