Michelle Monaghan has revealed she and Gerard Butler went out to sing karaoke while filming Machine Gun Preacher.
The two star together in the forthcoming film, which is based on the true story of a former drug dealer called Sam Childers who went on to dedicate his life to saving children in Sudan.
But the Gone Baby Gone actress told Collider there were lighter moments too.
She said: "We sang karaoke together and [the song] was Wonderwall. But he's good and I suck - oh my gosh!"
The actress added that she enjoyed playing Sam's wife Lynn in the film.
"She's very cool, calm and collected and I'm very emotional. It was the first time in my life to go against my instincts," she said.