Alex and Sierra performed at the Disney Christmas Day Parade - which aired Thursday on ABC - for the first time ever.

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The X Factor USA winners took the stage to sing “Love Is an Open Door” from the hit animated movie Frozen.

“& we are NOT show tune singers haha so thanks to disney who let us acoustify love is an open door. ya know. cause we never do that..” the singers tweeted on Thursday.

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Alex and Sierra also shared a photo from the event and thanked Disney for the opportunity.

The real-life couple, who released their debut album It's About Us in October, will perform many more times when they hit the road next year. Alex and Sierra revealed the news via Facebook earlier in December writing that they are "beyond stoked." They will also be joined by singer-songwriter Andy Grammer and alternative rock band Paradise Fears.

"We used to wait ages in line at @andygrammer concerts to get front row & a chance to meet... & now we get to tour together. life is rad," the singers tweeted.

See the tour dates here.

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