The Boy Erased actress’ floor-length gown was by Rodarte.
Nicole appeared as youthful as ever in photographs from the event – showing off her enviable physique in her gown which hugged her curves.
But in spite of her superstar looks, Nicole has been candid about the fact that she does not see herself as a celebrity.
Speaking to Allure magazine, the 51-year-old actress declared: “I’m not a celebrity”.
“I feel like I’m an actor. Beyoncé is a celebrity. And that’s a much bigger thing,” she added.
The Big Little Lies star also told the publication how her husband, Keith Urban, keeps her grounded.
“We’re Australian, both of us, so water is very therapeutic,” Nicole said.
“We have a beach house, and we will get up in the morning before we have breakfast, and we’ll go in the ocean.”