Margaret Qualley and Demi Moore attended the premiere of their film 'The Substance' at the Directors Guild Theater in Los Angeles, where Qualley showcased a stunning Chanel Haute Couture gown, embracing a ballerina-inspired aesthetic. The film is a body horror tale directed by Coralie Fargeat, featuring Moore as an aging actress who turns to a black-market drug to regain her youth, resulting in a unique body-swap narrative with Qualley's character. Both actresses described the demanding nature of the shoot, which involved extensive prosthetics and choreography, pushing them to their physical limits. Despite the grueling process, they formed a strong bond while filming, highlighting the emotional and physical challenges of their roles. 'The Substance' has garnered critical acclaim and sparked Oscar buzz for Moore, marking a significant milestone in her career. The film's exploration of themes like self-hatred and societal pressures on women's bodies adds depth to its horror elements.