Actress Susan Sarandon says she found her co-star Melissa McCarthy "brave as hell" while filming her new movie "Tammy".

The 67-year-old, who plays a hard-drinking grandmother in the film, directed by McCarthy's husband and co-writer Ben Falcone, says the star went above and beyond when playing a woman who discovers her husband has been unfaithful, reports femalefirst.co.uk.

When asked what McCarthy is like, she said: "Smart, brave as hell, so sweet. I think that comes out in the movie. She can do anything, and somehow you forgive her, because she is such a good person, such a sweet person."

Sarandon also admired the way her co-star worked with her spouse.

Talking about her working relationship with Falcone, she said: "As a team, the two of them were very collaborative. I never sensed any problems. They'd been working together for a long time already, so this wasn't something new."

"It's not guaranteed that people that are couples necessarily can work smoothly together, but they did," she added.