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Being married to a country music superstar does have its advantages -- Nicole Kidman asks her husband Keith Urban to play for her all the time.

"I love having music in the house. For someone that can't play an instrument, it's joy, you know?" Kidman told StyleList at the New York premiere of her movie "Rabbit Hole" Thursday night.

"He was actually playing the piano just before we left, and [daughter] Sunday Rose was dancing around the living room," she added. "So that was my pre-premiere show."

Kidman added the two-year-old "sings incessantly."

"She has a repertoire of about 30 songs. The ABC song, 'Twinkle, Twinkle Traffic Light,'" she said with a smile. "Have you heard that one?"

Urban, standing by her side, said their daughter has quite an aptitude for music, although he's understandably prejudiced. As to whether Sunday Rose will some day perform at arenas, the proud papa shrugged, "Who knows?

The statuesque Kidman paired a lace-trimmed navy Clements Ribeiro dress that fell below the knee with bone heels and discreet jewelry. She not only stars in "Rabbit Hole," she also produced this buzzed-about film version of the Pulitzer Prize-winning play about how a family deals with the loss of a child. "I read the review of the play, and we were in a fortunate position where the rights were still available," Kidman said.

"Grey's Anatomy" star Sandra Oh, who is also in the film, chose a gray, low-cut, Amanda Wakely frock for the event. The weather had suddenly turned frigid, and wrapping a cashmere Faliero Sarti scarf around her neck, Oh told StyleList that that's her cold-weather must-have. "I am never without a scarf," she said. "I have a million scarves, I always wear a scarf on set because it's freezing on set."

Keith Urban was not the only high-profile male at the premiere. Aaron Eckhart, who also stars in the movie, and "Mad Men" star Jon Hamm made an appearance. At the after party at the Plaza Hotel's Oak Room, "Gossip Girl's" Chace Crawford made a late-night stop to congratulate the cast.

For a complete look at Nicole Kidman's style evolution, click here!