Nicole Kidman says she ''utterly respects'' her eldest children's Scientology beliefs.

The 45-year-old actress - who is married to Australian singer Keith Urban with whom she shares daughters Sunday Rose, four, and Faith Margaret, two, - said she will never discuss her older children Isabella, 20, and 17-year-old Connor Cruise's commitment to the controversial sect or speak out against it.

'The Paperboy' star - who was previously married to Isabella and Connor's father Tom Cruise - told The Hollywood Reporter: ''I've chosen not to speak publicly about Scientology. I have two children who are Scientologists -- Connor and Isabella -- and I utterly respect their beliefs.''

The Oscar winner also opened up about her views on fame and thinks that some of the perks are ''tacky.

She said: ''Never would I take free clothes. That would be so ... tacky. These people work so hard to make beautiful things -- you have to appreciate that.''

Nicole revealed that she much prefers living away from Hollywood with her husband in Nashville, although she admitted their days are equally star-studded there.

She said: ''It's such an easy lifestyle. And it's more diverse than you'd expect. There's so much great music. The Black Keys go jogging past the restaurant Keith and I go to. We'll hang out with Jack White in the studio. And there's music in our house all the time -- Keith plays harmonica, drums, banjo, piano and bass guitar. He has a strong will about his career, and so do I. We want each other to thrive and do what we love, and we never interfere in the other's career choices.''