The Salt star entertained an intimate crowd of 30 guests at the Soho Hotel in London with a private screening of the movie, which tells the story of a family caught up in the 2004 Indian Ocean tsunami.
The event was attended by actress Noomi Rapace and Game Of Thrones star Gwendoline Christie, alongside The Impossible's 16-year-old star Tom Holland, screenwriter Sergio G. Sanchez, and composer Fernando Velazquez.
Speaking at the event, Jolie said, "Ewan, I've known you for years and you're one of my favourite actors. But I watched this and I didn't recognise you. It's strange - to say it's one of the best performances of the year doesn't really give it credit. It doesn't feel like a performance - it comes from such an honest place."