Nicole Kidman calls herself 'Nicole Urban' in surprise appearance at Keith Urban's show

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Sunday night marked Keith Urban's final Vegas show — for now.

Nicole Kidman made a brief appearance Saturday night during Urban's show at the Colosseum at Caesars Palace.

Kidman appears onstage — to the delight of the audience — and the four-time Grammy winner asks questions as if she's a superfan.

"What's your name? Where are you from?" the country singer asked his wife. "Nicole Urban," she jokingly replied, to Urban's delight, PEOPLE reports.