2018 ACM Awards: Nicole Kidman is glowing in gold next to Keith Urban

Nicole Kidman is absolutely glowing in gold at the 2018 Academy of Country Music Awards!

The Aussie proudly stood by beau Keith Urban's side, looking lovely as ever in a shimmering, butter-colored gown. She's always a knockout, but -- wow! The dramatic totally-exposed back is one of her sexiest looks to date.

Keith couldn't take his eyes off his wife as she stepped aside for a moment to pose solo for the cameras.

Keith is nominated for the biggest award of the night, Entertainer of the Year, where he faces stiff competition from Luke Bryan, Garth Brooks, Chris Stapleton and Jason Aldean. But with Nicole by his side -- well, come on. The guy's obviously a winner either way.

The two were having the best time as they laughed on their way into the MGM Grand Garden Arena. Always the most glamorous couple!

Of course, while Nicole and Keith were a standout celeb couple of the night, there were other romantic pairings that made waves at the ACMs. See all their arrivals in the gallery below.