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Kidman was nominated for her portrayal of Kelly in Grace of Monaco

January 30, 2016 08:30 PM

Keith Urban knows his wife Nicole Kidman is always the prettiest woman in the room.

The country star told E! News on the Screen Actors Guild Awards red carpet, Saturday, that if he had to choose between iconic actresses Grace Kelly and Marilyn Monroe, he’d pick Kidman.

“You can’t choose me,” Kidman, who shares daughters Faith, 5, and Sunday Rose, 7, with Urban, replied. “It’s Marilyn or Grace.”

The couple were clearly taken with each other during the evening – from sweet kisses on the red carpet to cuddling at the after-parties, Kidman and Urban packed on the PDA.

Keith Urban and Nicole Kidman
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The actress, 48, was nominated for outstanding performance by a female actor in a television movie or miniseries for her portrayal of Kelly in Lifetime movie Grace of Monaco. “I met a lot of people, not a lot of people who knew her, but a number of people, and I also just studied her,” Kidman said of preparing for her turn as the princess. “My mom adored her, so my whole life, it was always Grace Kelly.”

Check out PEOPLE’s full 2016 SAG Awards coverage and complete winners list!

The SAG Awards served as a date night for the busy couple, who were married in 2006.

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Kidman previously said that they prefer to spend their nights together out of the spotlight.

“I put on my pajamas and I’m like: ‘Come on Keith, lets not go out – lets watch a TV show or a movie at home,’ ” she told the Mail on Sunday‘s You last fall.

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