Clarkson admits that she can still get starstruck by her mother-in-law backstage at the 53rd annual Academy of Country Music Awards.
The couple stepped out to celebrate Shelton's nomination at the Las Vegas ceremony on Sunday night.
Underwood appeared emotional at the 2018 Academy of Country Music Awards, where she took the stage for the first time since falling down stairs at home and injuring herself. She also accepted an ACM Award.
ET spoke to Aldean on the carpet at the 2018 Academy of Country Music Awards. The ACM Awards marked a big moment for Aldean; he'd been in the same city just six months earlier and endured the deadly Route 91 festival mass shooting.
The singer, who was also the show's host, performed with Kelly Clarkson.
The country icon thanked fans for their support following October's devastating mass shooting at the Route 91 Harvest Festival in Las Vegas, Nevada.
Reba previously told ET she was "thrilled to death" about the performance.
The 35-year-old singer had taken the stage just minutes before to sing her latest single, 'Pretty Hurts.'
The country star made her return to the stage, performing her new single, 'Cry Pretty.'
The cute couple stole the spotlight during this year's Academy of Country Music Awards, and fans couldn't get enough of their love.
ET spoke to the singer, and Entertainer of the Year nominee, at the 2018 Academy of Country Music Awards in Las Vegas. The show airs on CBS.
The “Tennessee Whiskey” singer also won Album of the Year at Sunday's country music awards show.
ET also spoke to Keith Urban about doing a cameo on the second season of the hit HBO show.
ET spoke with the band on Sunday's 2018 Academy of Country Music Awards red carpet.
