Reba McEntire, 69, Proves She's ‘Aging Backwards’ in Resurfaced Video, According to Fans

Reba McEntire fans say her latest social media post is further proof that she's "aging backwards."

On Thursday, the 69-year-old multihyphenate shared a throwback video of her and Andrea Bocelli's duet of an Elvis Presley Christmas classic, "Blue Christmas," reminiscing on the "incredible" holiday special they were part of years ago in the accompanying caption.

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"#TBT to nine years ago singing an Elvis classic alongside the incredible @andreabocelliofficial ❄️ #BlueChristmas," she gushed in her Dec. 12 Instagram post.

Fans seemed just as astonished by the clip now as they recalled being at the time they first came across it. "Gorgeous so beautiful song. Great performances of you and Andrea," one declared, adding, "Greetings from Germany."

"I have this special on dvd and cd!" another exclaimed. "One of your most beautiful Christmas performances ever! Reba you are just one special lady. You have a heart of gold 💛 ❤️."

A third was in disbelief over how much time had gone by, "Nine years ago????" they questioned before praising the star, "You’re aging backwards.Lovely lady ❤️."

"Wow beautiful, two incredible people with amazing voices. ❤️❤️❤️❤️👏," someone else applauded.

"One of my very favorite Christmas duets!" a different Instagram user admitted. "Those voices compliment each other so beautifully! I could listen to a gazillion times and never be tired of hearing them sing together!!!♥️♥️."

Several others also dubbed it one of their "favorite Christmas collaborations."

To listen to the entire studio version, the festive tune is actually featured on Bocelli's 2009 Christmas album, My Christmas (The Fireside Edition), streaming wherever you get your music.

That same year, the two came together for Andrea Bocelli & David Foster's Christmas Special, which aired on Nov. 26, 2009, per IMDb, so the country queen may be a little off with her timing, but we'll give it to her because the clip she reposted from was only uploaded to Youtube nine years ago–and time flies when you're having fun with projects like The Voice and Happy's Place!

You can watch the full version of their live duet below:

Next: Reba McEntire Reveals Surprising Way She Likes to Spend Christmas