Donning a chic black Saint Laurent gown, the actress spoke to several media outlets at the fete, opening up about her decision to be so candid about her surgery, which she underwent after being diagnosed with a mutated BRCA1 gene. She wrote about her surgery in a piece for the New York Times published in May.
"I've been very happy just to see the discussion about women's health expanded, and that means the world to me," Jolie told reporters, according to the BBC. "After losing my mom to these issues, I'm very grateful for it."
Jolie's mother, Marcheline Bertrand, died from ovarian cancer in 2007, and shortly after Jolie penned her essay, she also lost her aunt, Debbie Martin (Bertrand's sister), to breast cancer.
However, at the premiere, Jolie tried to put the spotlight back on Pitt and his zombie-themed June 21 film release. "I'm very excited for Brad. And it's a very fun film and my boys are around tonight so they're enjoying it," she said, before adding, "He's been extraordinary, just extraordinary. He's such a wonderful man and a wonderful father. I'm very, very lucky."
In the wake of her candid essay, the Oscar winner has received lots of support from her peers in Hollywood, and that includes her partner, Pitt, who spoke about her courage at the premiere.
"Well, I mean the beautiful thing is that for us, life will go on. We're here taking care of business as usual. We're on the other side of that. It was a very moving experience; it certainly brought our family tighter together," he said. "It's just the bravest thing to me.
"I get a little emotional about it, because of just the act itself, what she did for our family, and then telling her story to others," he added. "What it means to others has really surprised me."