Nicole Kidman and Keith Urban. (Michael Buckner/Penske Media via Getty Images)Nicole Kidman and Keith Urban have called it quits, according to People. The Babygirl star, 58, and the country crooner, 57, have separated, with a source telling the magazine, "Nicole's sister [Antonia] has been a rock and the entire Kidman family has come together to support one another.""She didn't want this," the source added of Kidman. "She has been fighting to save the marriage.