CMT Awards 2018: Hottest couples on the red carpet

Must be the Tennessee summer air -- country couples were hot and heavy at the 2018 CMT Awards!

Most excited to flaunt their love were Kelsea Ballerini and husband Morgan Evans, who tied the knot in 2017. The newlyweds couldn't stop smooching and smiling at each other on the red carpet. The 24-year-old songstress was nominated for two awards of the night.

Also happy to be by each other's sides were Lindsey Vonn and beau P.K. Subban, who before last night hadn't formally confirmed their relationship.

Meanwhile, Carrie Underwood and Mike Fisher briefly posed for the paparazzi together, and Jason Aldean and his wife Brittany perfectly color-coordinated in blue.

We always love seeing what Luke Bryan's wife, Caroline, will wear on the red carpet, and she definitely didn't disappoint! Her shimmery bronze mini was perfect for the lighthearted but glam occasion. The two wed more than a decade ago in 2006, and they still love goofing off for the cameras together!

Of course, plenty of stars hit the event solo. Blake Shelton arrived without girlfriend Gwen Stefani.

See all the CMT arrivals in the gallery below: