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Christina Aguilera made her debut at the ACM Awards last night, and from her presence to her pipes, she totally owned the stage!

The 34-year-old singer squeezed her sexy body into a white Roberto Cavalli gown, and though she went heavy on the makeup, her platinum locks were relatively tame. Xtina and Rascal Flatts' Joe Don Rooney and Gary LeVox performed "Shotgun," and the group also sang the band's hit, "Riot."

"I really love the song. It speaks to long-lasting love, the roads it takes, the turns it makes and how it lasts forever," she told People of "Shotgun." "When I perform it, I really think of that older couple who have been through it all and who have stood the test of time with the changes that their relationship goes through."

Taylor Swift went pop, but can Xtina go full country? I mean, she is a guest star on ABC's Nashville, so it's not totally out of the cards!