Nicole Kidman, Keith Urban show off major PDA

Nicole Kidman, left, smooches her husband Keith Urban at the Lincoln Center's American Songbook Gala at Alice Tully Hall in New York City. (Mike Coppola/Getty Images for Lincoln Center)

Keith Urban wants to "Kiss a Girl," and that girl is his wife, Nicole Kidman!

The lovebirds, who have been married since 2006, couldn't seem to keep their hands to themselves on Tuesday night, packing on intense PDA at Lincoln Center's American Songbook Gala at Alice Tully Hall in New York City.

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The "Big Little Lies" star glittered in a gold Givenchy gown, while her husband complemented her look in a classic black tuxedo.

Nicole Kidman donned a gold Givenchy gown while her husband Keith Urban opted for a black tuxedo. (Mike Coppola/Getty Images for Lincoln Center)

As the two took the stage to honor HBO CEO Richard Plepler, they turned to each other and leaned in close for a sweet kiss.

Before heading into the gala, Kidman took to Instagram to show off their ensembles. "Date night," she captioned the photo, complete with a heart emoji. "On our way to the #AmericanSongbookGala honoring my dear friend Richard Plepler."

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Kidman and Urban, both 50, have never been shy about expressing their love for one another in public or in interviews with ET. Earlier this month, the "Gemini" singer spoke with us about his ninth studio album, "Graffiti U," out now, and what it was like being able to work on it from his home studio in Nashville, Tennessee, where Kidman and their two children, Sunday, 9, and Faith, 7, would often pop in. (Kidman also shares two kids, Isabella, 25, and Connor, 23, from her previous marriage to Tom Cruise.)