• Couple Nicole Kidman and Keith Urban attended the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City.

Couple Nicole Kidman and Keith Urban attended the 'Manus x Machina: Fashion In An Age Of Technology' Costume Institute Gala at Metropolitan Museum of Art on May 2, 2016 in New York City. (Photo : Getty Images/ Larry Busacca)

Nicole Kidman and Keith Urban have proven once again their love for each other during their most recent car duet.  They made the world witness their sweet duet of his country music "The Fighter" after he shared it in his YouTube channel on May 12, Thursday.

It's not the first time for Kidman and Urban, who have been married for 10 years to perform together. The duo lip-synced the music video as they sat in the front seat of their family car, according to Daily Mail.

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When Urban turned the radio on, Kidman appeared surprised. "Oh my god, I love this song!" a make-up free Kidman was heard saying in the video.

Urban serenaded his wife before the music was interrupted. When it played again, the actress danced to its rhythm as her husband sang the lines of "The Fighter." When the chorus came, she started lip-syncing too.

The song was originally performed by Urban with the country music queen Carrie Underwood.

As the music played, Kidman and Urban drew closer to each other, then he stared into her eyes. They both burst into laughter. When the line reached "You're beautiful, so beautiful," the actress blushed and covered her face.

It was then that her $50,000 worth of engagement ring was seen on her ring finger. They continued singing and finished the video with Urban hugging Kidman.

Kidman and Urban have been together since they got married in 2006 in a romantic ceremony in Sydney, Australia. They share two kids together, Sunday Rose and Faith Margaret.

She was married to Tom Cruise from 1990 to 2001. Kidman and Cruise has two children, Bella and Connor who are now both grown-up's.

On May 12, Thursday episode of "The Ellen DeGeneres Show," posted on its official website, Urban proudly talked about his wife and their upcoming anniversary next month. He told the talk show host Ellen DeGeneres that his life began the moment he met the actress.

Urban claimed it seemed he spent all his life preparing to meet Kidman. He told DeGeneres that on their anniversary, even he will be in Boston for a performance, she will be meeting him there to celebrate their special day.

Check out the video of Kidman and Urban's car duet: