Actress Melissa McCarthy's husband, Ben Falcone, came up with the concept for her new movie Tammy in his sleep.

Falcone directed the film and the Bridesmaids star explains they wrote the project together after he dreamed up the premise one night.

She tells U.S. breakfast show Good Morning America, "He came downstairs..., and he was like, 'I had a dream you were on a road trip with your grandma, she's an alcoholic and I think she might sleep around,' and he was like, 'I think we might have to write it.'

"We just keep talking about it...Suddenly we were like, 'I think we have an outline and I think were writing it' and we kind of fell in love with it."