Thomas Rhett is a Belieber — or at least he was at Monday night's (June 27) Justin Bieber concert in Nashville. Rhett brought his wife, Lauren, to Bridgestone Arena for an epic Bieber singalong.

There is no shame in TR's game. He proudly snapped a selfie with his wife at the show, and with a well-lit stage behind him, it's easy to overlook his attire — but you shouldn't. Rhett is sporting a white sweatshirt that simply reads "Bieber" in a black font. His wife got in on the Belieber fever too, rocking a white T-shirt with Bieber's face on it.

It looks like they were having a ton of fun, too, posting a video in which they're canoodling and belting out Bieber's "Sorry" along with a couple of friends. Lauren captioned the clip, "Well that was fun #notSORRY."

TR and Lauren weren't the only country stars who enjoyed the big show. Lauren posted photos and videos to her personal Instagram, and in one you'll spy a familiar face. They're cheesing hard with Dan Smyers of Dan + Shay in a Belieber squad snapshot.

Kelsea Ballerini also took to socials to show fans her good time at the concert. She shared a few clips to her Snapchat story of Bieber's vocals and one of her mouthing along to "Love Yourself." Also spotted: Randy Houser and his wife, as well as Kane Brown.

More Adorable Pics of Thomas Rhett and His Wife