Stefani seemed to be in the holiday spirit, attaching audio from the classic song "Last Christmas" while twirling around in a shimmering green long-sleeved neckline mini dress with a plunging neckline, knee-high boots and fishnet tights.
She let her bleached locks loose in fallen curls, as her glam focused heavy on the eyes. The "Hollaback Girl" singer accessorized with large chunky rings, a rhinestoned choker necklace and dangly earrings.
Stefani chose a few of her favorite snaps for a follow-up post, captioning the upload, "2nights look 🤍."
Between the two mesmerizing posts, fans flooded both comments sections in disbelief by Stefani's effortless beauty.
"Is this woman aging backwards?" one user wrote, as another added, "omg 😱 she looks stunning 🤩 at her age ! Wow."
"Blake Shelton is the real winner and all time champ 🔥❤️🙌😍," a third fan gushed regarding Stefani's husband, who retired from The Voice after 12 years and 23 seasons as a coach on the singing competition series.
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"The fact that she's old enough to be my mother is mind boggling 👀🙌🏾," a fourth admirer admitted of Stefani — who shares three sons, Kingston, 17, Zuma, 15, and Apollo, 9, with her ex-husband, Gavin Rossdale.
Of course, some haters slipped through the cracks of a mostly-positive comments section, as one critic complained Stefani "pretty much looks like a Kardashian," while another snubbed: "Looking airbrushed and filtered but I guess that’s what everyone is doing 🤷🏻♀️."
Aside from showing off her flawless features, Stefani addressed viewers of The Voice in an Instagram Story video after the last person from her team had been voted off of the show.
"We’re backstage at The Voice. I don’t know if this is the first time I’ve ever been to the finals with nobody. Especially after Bias is just so cool and real and genuine and authentic and all the things I’ve been saying. So I am sad," the "Just a Girl" singer explained.
"I just wanted to say thank you for watching... and I want a recount!" Stefani concluded.