The country singer shared the stage with a young Make-A-Wish recipient named Kaitlyn last Friday night at a country music show in Brownsville, Ore.
"She's totally gonna upstage me, she's totally gonna make me look bad, but hey . . . Let's give her some love right now," Carrie yelled to the crowd.
Kaitlyn then got on stage and awesomely sang Carrie's hit song "All-American Girl."
"So awesome!" Carrie said after their duet.
"That was professional right there. If I was her and I was walking out here at her age in front of this crowd, whoa, I probably would've just stood there. That was very impressive."
Then Carrie joked, "Good night, everybody! Just kidding."
Carrie even sent Kaitlyn a Twitter shoutout, "A special thanks to my duet partner, Kaitlyn!"
Watch their adorable performance above!
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Gallery | Carrie Underwood Hits the Stage