ET caught up with the actress and her husband, Keith Urban, on the red carpet at the ACM Awards in Las Vegas on Sunday, where she revealed the country star has already seen a few episodes from the second installment of the popular drama ahead of its return to HBO this June.
"He's seen some of it," Kidman, who portrays Celeste Wright, confirmed to ET's Nancy O'Dell, as Urban agreed, saying, "Seen a few eps. Duh."
Kidman teased that the second season of the series, which also stars Reese Witherspoon, Shailene Woodley, Zoe Kravitz, Laura Dern and Meryl Streep, will be "what everyone hopes it's going to be and a little more."
"I think it's going to have its own tone and own story this season and that's what we want," she continued. "We follow all of the women in depth now, which is fantastic. It twists and turns ... but it's hopefully very authentic and truthful of where these women are in this stage of their lives."
ET also caught up with Kidman and Urban backstage, just moments after the "Coming Home" singer took home Entertainer of the Year, beating out Jason Aldean, Luke Bryan, Kenny Chesney and Chris Stapleton.
"I've never won it before here," Urban said, adding that he felt the love in the room from all his country music colleagues. "The audience is everything. We're in this all together. The highs, the lows, we're in it all together. To everyone, thank you."