Jessica Chastian has slammed rumours that she is at war with fellow Oscar nominee Jennifer Lawrence.

Both stars are nominated in the category for Best Actress in a Leading Role at the 2013 Academy Awards, with Chastain in the running for Zero Dark Thirty and Lawrence for Silver Linings Playbook.

In a post on her Facebook page, Chastain addressed the reports, writing: "I find it very sad that media makes up bogus stories about women fighting in this industry. Filming The Help was the most amazing experience and yet, that is the film I'm most asked about in regards to 'fighting on set'. Why do we support the myth that women are competitive and cannot get along?

"I think all of the actresses recognised this year have given incredible performances. But more important, they've all shown themselves to be filled with generosity and kindness. I've done two photo shoots with Jennifer Lawrence over the years and have found her to be utterly charming and a great talent. I've told her how beautiful her film work is. Please don't allow the media to perpetuate the myth that women aren't supportive of each other. Every time an actress is celebrated for her great work, I cheer.

"For the more brilliant their performance, the more the audience demands stories about women. With support and encouragement, we help to inspire this industry to create opportunities for women. And as we all know: a great year for women in film, is just a great year for film."