Keith Urban and Nicole Kidman's biggest critics might just be their daughters. 

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With a country star and an Oscar winning actress for parents, six-year-old Sunday Rose and four-year-old Faith Margaret have a few opinions on what their mom and dad put on before walking out the door.

According to E! on Tuesday, the girls were pretty critical as Kidman dressed for the G'Day USA Gala in Hollywood on Saturday evening.

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Kidman said that her children thought she was "too tall" to pull off the outfit she'd decided on.

"They don't like when I wear high shoes," noted the actress. "I keep telling them they're going to be tall one day."

As a mother and a woman with a busy career, Kidman prefers comfort over fashion these days. "It's comfortable," she said of the outfit she wore, a long black dress with sheer sleeves and a slit down the side. "It's a big thing for me right now."

Kidman has been on the move a lot lately, promoting her upcoming indie flick Strangerland and attending premieres for her new family-friendly film, Paddington. When they're not jetting around the country with their kids, Urban and Kidman are raising their little family quietly in Nashville. Always worried about leaving their kids for too long, Urban brings Kidman and their kids along for the ride when he tours. As Sunday Rose and Faith Margaret begin school, however, this may prove to be more difficult.

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