Amy Adams' husband, Darren Le Gallo, also attended the night's festivities, but all eyes were on the Arrival actress, who wore a custom Max Mara tuxedo, which she paired with a sheer bodysuit and plenty of diamonds.
ET caught up with the 37-year-old actress on the red carpet, where she gushed about making her directorial debut in her new movie, All We Had -- but also admitted that it was tough to both direct and act in the project.
"I had a lot of notes of what I wanted to do, but it's still… it's a big risk," she revealed. "It's a sense of nervousness because any project that you put out, you want people to like it and see it, to experience and connect with it, I suppose, but it's really thrilling.
"I'm so grateful that I got to do it," she shared, adding that she plans to celebrate the film's December premiere with friends in theaters.