The actress has been an outspoken supporter of the women coming forward with stories of sexual harassment and assault.
Jessica Chastain has Salma Hayek's back.
ET spoke with the Molly's Game star at the premiere of the film in New York City on Wednesday, where she opened up about Hayek's recent op-ed for The New York Times. In the piece, Hayek detailed the struggles of bringing her 2002 film, Frida, to screen, and alleged harassment by Harvey Weinstein.
"Salma Hayek, what an incredible artist, what an incredible woman, what an incredible humanitarian," Chastain told ET. "That piece really showcases why it is important to have more woman in leadership positions, because, first of all, what a producer she was."
"Highlighting everything she went through to get her movie made, she's such an accomplished, incredible human being [and] a voice we need in our cinema, in our society," she continued. "I hope we're getting to a point where we're making lasting changes so women like Salma Hayek won't have to go through what she did. It's really heartbreaking."
Chastain, who has been an outspoken supporter of the women coming forward to name their alleged harassers, also opened up about the excitement of being nominated for a Golden Globe for her performance in Molly's Game.
"It's always exciting for me, [but] especially exciting with this film. I was really surprised by [the nomination] and I'm happy to be acknowledged," she gushed. "I'm excited for everyone to see the film."
Molly's Game hits theaters on Dec. 25.
See more on the actress in the video below.