Carly Pearce and Lee Brice celebrated what had already been a career-altering night for both artists at the 2021 ACM Awards on Sunday night (April 18) with an emotional performance of their smash hit, "I Hope You're Happy Now."

Shining in a gold and sparkly mini-dress custom-made to show off her sculpted legs, Pearce looked as if she might have been happily floating on air as she stepped out with Brice to sing the duet, which had already won Single of the Year and Music Event of the Year.

For Single of the Year, Pearce and Brice beat out Miranda Lambert, Gabby Barrett, Ingrid Andress and Maren Morris for the honor, and in her acceptance speech, Pearce paid tribute to all those who helped her get to this moment.

"I love country music more than anything in the whole world," she said. "We wrote this song about my story, and I guess it resonated with everybody."

Pearce also made sure to thank her late producer, Busbee. "This is the last song that my producer worked on ... thank you, Busbee," she added.

Indeed, the song has played an important part in her evolution, as she continues to heal following her divorce from fellow country singer Michael Ray.

"To think about how hard I and my team fought to get this song right, and how much [Lee's] voice lent ... just exactly what I always wanted for it," Pearce said in an interview earlier this week with People. "This last year has just blown my mind in so many ways. Country music, you saved me, so thank you."

2021 ACM Awards Show Photos:

The 2021 ACM Awards took place in Nashville on Sunday night (April 18). Luke Bryan was crowned Entertainer of the Year, while Thomas Rhett and Maren Morris were named Male and Female Artist of the Year, respectively.

The three-hour show was also packed with performances from Miranda Lambert, Luke Combs, Little Big Town and many more. Artists were at the Grand Ole Opry House, the Ryman Auditorium and the Bluebird Cafe, as well as on Lower Broadway, at the Station Inn and along the Nashville riverfront.

Keith Urban and Mickey Guyton co-hosted the show.
The best dressed on the 2021 ACM Awards red carpet brought color — lots of color — for an awards show that promises to be a celebration. Photos show stars like Carly Pearce, Kelsea Ballerini, Chris Young, Kane Brown and more wearing the hottest and often most expensive designer outfits, or suits they designed themselves, in the case of Jimmie Allen.

Check out a full gallery of country music's hottest stars on the ACM Awards red carpet. Who do you think is best dressed and worst dressed?

The 2021 ACM Awards took place at the Bluebird Cafe, Grand Ole Opry and Ryman Auditorium in Nashville on Sunday (April 18).