Keith Urban and Nicole Kidman's kids don't want any more competition.  

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With a country star and award-winning actress mom, it's no wonder 6-year-old Sunday Rose and 4-year-old Faith Margaret don't want another brother or sister to steal the focus of their already busy parents.

At the Sundance Film Festival in Park City, Utah on Jan. 23 47-year-old Kidman spoke with E! about her desire to have more children and how her young daughters feel about the idea.

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While Kidman is always up for expanding her family with Urban, apparently Sunday Rose and Faith Margaret see things differently. They have a very decided opinion on the matter and it seems to be in direct conflict with what their mother would prefer. "No, they don't want any competition," explained the Strangerland star.

"I asked them if they wanted [a sibling] and they were like 'No, we're fine, actually,'" explained Kidman.

Just because they don't want a younger brother or sister doesn't mean the girls aren't interested in opening up their home. In fact, the pair have a very specific addition in mind.

"They want a dog," revealed Kidman.

While her kids may not be crazy about the idea, Kidman has certainly had babies on the brain over the last year. She's noted in numerous interviews that she'd love to have more children and often wishes that she were pregnant.

Kidman and Urban live in Nashville with their daughters.

Tags: keith urban Nicole Kidman celebrity baby