She may already have four children, but Nicole Kidman revealed she's eager for a fifth, even though she knows she'll never have one.

"I would be down on my knees begging for another one, but it's not going to happen," the Grace of Monaco star shared. "Even though I got a call from my publicist recently saying, 'Are you having another baby?' And I said, 'I wish.'"

Though she won't be expanding her brood any further, the actress acknowledged she has enough going on with her two biological daughters with husband Keith Urban as well as her two adopted kids with Tom Cruise.

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Nicole and Keith with Faith, 3, and Sunday, 5

"When you have adult children and then tiny little ones, they don't spend much time together," Nicole admitted of her unique family situation.

She also explained to Sunday Style magazine how raising daughter Isabella, 21, and son Connor, 19, made her "wiser" when it came to parenting her younger girls.

Though she's rarely seen with them, Nicole couldn't help but gush about the older pair recently.

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Isabella and Connor in 2013

"They are generous, kind and hardworking," she told The Australian Women's Weekly magazine last month of the duo. "And these are traits that I love to see in my children."

In the same interview, the 46-year-old explained how her family is always her number one priority.

"If it were the choice between my family and Keith, and my career, I wouldn't even bat an eyelid," she shared. "The joy I get from us as a family outweighs any joy in any other area of my life, by far."