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Nicole Kidman is opening up about her personal stake in the age-old working mother vs. stay-at-home mom debate.

In an interview to promote her upcoming movie "The Secret In Their Eyes" that appears in the March issue of Harper's Bazaar, which is teased on MailOnline, Nicole explains that being a full-time homemaker is not for her.

"I don't want to be the mother who lives vicariously through my daughters, so I'm trying to balance it," Nicole, 48, told the magazine, which hits newsstands on Feb. 2. "There was a period where I didn't do anything, and my mum said, 'I really think you need to get back and do something.'"

While she admits she's lucky that she could "sit and daydream" at the Nashville home she shares with husband Keith Urban and do the school run if she wanted to, the Australian Oscar winner believes that having a creative outlet is "better for everyone in the family," including her and the country singer's daughters Sunday, 7, and Faith, 5.

"I want to be around them. I'm the happiest when I'm around them," she explained. "It's that simple. But for me to completely give up doing any of this, what would I do artistically?"

Nicole also revealed her nickname for her girls: She calls them "The Kittens" because of their "purring, affectionate natures," she said, adding that "they snuggle and they're very warm."