Jennifer Lawrence plays "a mess" in the movie she's co-writing with Amy Schumer.

Jennifer Lawrence

Jennifer Lawrence

Lawrence and the 34-year-old comedian have united for a new film, and she's offered an insight into what fans can expect from the movie when it hits cinema screens.

Asked about her on-screen character, Jennifer joked: "I'm a mess."

By contrast, she said Amy is getting the chance to fulfil her "lifelong dream" in the movie.

She told Entertainment Tonight: "Amy, in this movie, she has it very together. It's her lifelong dream to be a flight attendant. She works at the airport."

Meanwhile, Jennifer recently admitted it'll be "bizarre" once 'The Hunger Games' franchise comes to a close this month.

The 25-year-old star has been appearing in the role of Katniss Everdeen since 2012, and confessed there will be a gap in her life once it's complete.

She said: "I think it will be pretty bizarre when the movie is finally out and... everything is officially done.This movie has been my life for so many years."

Jennifer also said she owes a lot of her subsequent success to the franchise.

She admitted: "There were a few years of getting used to it, your entire world changes.

"I have a new normal now, I feel very stable and normal and happy. But the pressure... you just can't think about it."