The Deckers made a sweet entrance, with Eric sporting a T-shirt with his wife's face on it. The "Another Dumb Love Song" singer and mother of three, meanwhile, rocked a chic light pink mini dress. She was adorably bashful as her husband proudly showed off his tee on the carpet.
Ballerini, wearing a sparkly one-shouldered number with a thigh-high slit, couldn't have looked cooler as she and her husband, Evans, posed for photographers.
Underwood and Fisher couldn't stop smiling as they stepped out for the event as new parents of two, four months after welcoming baby son Jacob.
Brown and his wife, Jae, proudly took an opportunity to show off her precious baby bump.
And Chris Lane and his girlfriend, Bachelor alum Lauren Bushnell, balanced each other out with Lane in an all-black ensemble and Bushnell in a glamorous white gown. The pair's appearance comes just days after ET visited them in Nashville for an exclusive tour of their home.
See more of the night's cutest couples in the gallery below.