Nicole Kidman is opening up about her life as a mom.
The 51-year-old actress covers Vanity Fair's May issue and discusses family life with husband Keith Urban and their two daughters, 10-year-old Sunday and 8-year-old Faith, in Nashville, Tennessee. Kidman says she has a strong belief in God and they all go to church as a family.
"That's how we are raising our children. Keith has his own beliefs but he comes, too," she says. "I had a very Catholic grandmother, and I was raised praying, so that had massive impact. I wouldn't say it’s absolutism, there's constant questioning -- I'm a willful, feisty girl. For me it's very important that I don't have judgment. My dad would always say, 'Tolerance is the most important thing.'"
Kidman was previously married to Tom Cruise -- who's known for being very open about his Scientology beliefs -- for 11 years before they split in 2001. The actress also gives an update on their kids together, who are both Scientologists, and shares that their son, 24-year-old Conner, works in music and lives in Miami. Their daughter, 26-year-old Bella, launched a T-shirt line called BKC -- which stands for Bella Kidman Cruise -- and is now married and lives in the U.K.
"Bella lives just outside London," she shares. "You know, she really feels more English. We lived there for Eyes Wide Shut, Mission Impossible, and The Portrait of a Lady. They both had English accents when they were little."
As for raising her younger children, Kidman says she definitely sets rules for them, even if it makes her "unpopular" sometimes.
"They don't have a phone and I don't allow them to have an Instagram," she notes. "I try to keep some sort of boundaries."
As for following in their famous parents' footsteps, Kidman reveals the two love music and both play instruments; Faith plays the violin, while Sunday plays the piano. Sunday also appears to have an interest in acting.
"You can't really get kids into anything, I've realized," Kidman says about not pressuring her kids in to any career path. "You can push them a bit, but motivation is a really hard thing. I mean, nobody motivated me to be an actor; if anything they tried to deter me."
Kidman's career, of course, is still flourishing after decades in the business, with the highly anticipated second season of Big Little Lies debuting on June 9 on HBO. She talks about her close relationship with her co-stars -- Reese Witherspoon, Laura Dern, Zoe Kravitz and Shailene Woodley -- and says they're all planning to go to Kravitz's upcoming wedding to her fiance, actor Karl Glusman.
"To watch Zoe and Shailene grow up and to see them become women … it's so nice, and I've never had that," she says. "I know Laura and Reese feel that, too. We’re all so different, yet we complement each other."
She later reveals the women have a group chat, which includes the "very funny" Meryl Streep, who signed on for season 2 to play Kidman's mother-in-law.
"Look at the Friends cast, they spent all that time together -- they're different because there are no men in our equation," she points out. "I mean, there are, but they’re not on the group chat, let’s put it that way."
"Can you imagine that we got to go to dinner with Meryl every week? And hear her stories!?" Kidman adds. "It's like years and years of actresses being siloed off, and finally they let us intermingle. You can only imagine the conversations that we had. It was a really amazing experience of sharing our indignities and our triumphs, and just every rainbow of the female experience in our business."
ET recently spoke to Kidman and Urban at the ACM Awards earlier this month, where she revealed Urban has actually seen some of Big Little Lies season two.
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