Viola Davis tried to "redefine strength" for her role in 'Widows'

Speaking at the movie's world premiere in London's Leicester Square on Wednesday (10.10.18), the American star - whose on-screen character tries to complete her husband's failed heist - told BANG Showbiz: "I try to find out who the person is. We have to redefine strength."

In the movie - which is based on a TV series of the same name - Viola's character is supported in her heist attempt by three other widows.

And the iconic actress has admitted that Veronica is a particularly contradictory character to portray.

Viola - who stars in 'Widows' alongside the likes of Michelle Rodriguez, Colin Farrell, Robert Duvall, and Liam Neeson - explained: "Is she strong? Yes, but she's still vulnerable, she's still grieving, she's still very much a woman. And that's what makes us strong."

Meanwhile, Viola admitted last month that she regrets the way the characters in 'The Help' were portrayed.

The actress - who played maid Aibileen Clark in the 2011 period drama - revealed that while she enjoyed the experience on set, she wasn't pleased with the final film.

Responding to a fan's question, Viola said: "The friendships that I formed are ones that I'm going to have for the rest of my life. I had a great experience with these other actresses, who are extraordinary human beings. And I could not ask for a better collaborator than Tate Taylor.

"I just felt that at the end of the day that it wasn't the voices of the maids that were heard ... I know that if you do a movie where the whole premise is, I want to know what it feels like to work for white people and to bring up children in 1963, I want to hear how you really feel about it. I never heard that in the course of the movie."