The Christmas-loving celebrity couple first bonded when they were cast as judges on The Voice, so it's only fitting that Shelton and Stefani used their competition show as a platform for their sweet new duet.
It wasn't just the track that got the audience watching the The Voice stage (and everyone bopping along at home) in the holiday spirit: Stefani was decked out like a Christmas tree in a dress covered in a holly pattern.
Shelton...well, Shelton wore flannel. But at least it was cranberry-colored.
To be fair, it wasn't just the couple's country-fied Christmas song that made the performance so special. Dancers carrying disco balls also stormed the stage, making the whole thing particularly festive.
And a good holiday, it was. Watch the video below:
If you're wondering how Stefani went from ska to fa-la-la-la (sorry), well, blame Mariah Carey – Stefani certainly does. In an interview with Entertainment Tonight, the star admitted that the "All I Want For Christmas Is You" singer is her ultimate #ChristmasGoals.
"I want to be Mariah Carey," Stefani told ET. "I mean, she's the one who just...she killed it, you know what I mean? That would be my fantasy [to create a Christmas classic]."
Still, Stefani understands the irony of her roots. She told ET:
"I'm like, 'Oh my God, I'm in a ska band my whole life. [Why] am I doing 'Silent Night?'" she joked to the outlet. "It's hard, but it was fun, and I got to do it in my way, so [it was a] fun project."