Qualley tells PEOPLE how the body-horror film, directed by Coralie Fargeat, pushed her to take risks onscreen Embodying her character in The Substance challenged Margaret Qualley to take new risks onscreen.

The actress is seemingly everywhere this year, and in “The Substance,” she delves into an unusually disturbing new role.

Demi Moore tells PEOPLE she hadn't met Margaret Qualley before becoming her costar in Coralie Fargeat’s new horror movie 'The Substance,' but had enough 'indirect connections' that they 'felt like we

In Coralie Fargeat’s body horror shocker The Substance, Demi Moore stars as Elisabeth Sparkle, a former A-lister who is unceremoniously fired from her fitness TV show by a loathsome studio boss, played by Dennis Quaid.

Moore and Qualley give bravura performances, both surely having faced the scrutiny women in Hollywood and the world are under. Moore allows the camera to film closeups of her thighs and the stomach of a woman who has had kids,

"Unfortunately there is no magic boob potion, so we had to glue those on," the actress said of playing her character, Sue, in the body-horror film

The stars of the body horror film hit the red carpet for its L.A. premiere on Sept. 16 Chelsea Lauren/Shutterstock Scout Willis, Tallulah Willis, Demi Moore and Rumer Willis Demi Moore, Margaret Qualley and Dennis Quaid are bringing the scares with their new film,