The 39-year-old Voice judge showcased her latest pricey accessory while backstage ahead of her appearance on The Tonight Show With Jimmy Fallon.
Clarkson proved she's all business, just days after celebrating her singlehood with her closest girlfriends in Las Vegas then jetting to Blake Shelton's show.
Flashing her signature pearly whites, the mom of two looked stunning in a white leopard print dress that cost more than most people's rent.
Rocking an Alex Perry leopard print dress that retails for $1,500, Clarkson gave off sex kitten vibes in red lips and wild bedhead hair.
While she added a black belt and oversized hoops for good measure, the Since U Been Gone singer's most noticeable accessory adorned her left ring finger.
After pulling the plug on her marriage with Blackstock, Clarkson opted not to leave that finger bare.
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Instead, she covered what used to hold her blinding wedding ring with a black diamond, a fierce nod to herself for her recent prenup win.
Besides her newest bling addition, Clarkson relished in her victory with her Voice co-stars Blake Shelton and Ariana Grande as soon as she found out the news.
Her ex had been fighting the prenup and wanted it thrown out in the divorce, but a judge denied his request earlier this month — instead, ruling the contested premarital agreement would stay in place — a major win for Clarkson.
The judge's prenup decision means the Grammy winner will be able to keep everything she earned during their 7-year marriage.
But don't feel bad for Blackstock because he's rolling in the dough, thanks to his ex's success.
The music manager-turned-full-time-ranch-hand is collecting $200,000 per month from Clarkson. That breaks down to $150,000 in spousal support and $45,601 in child support.
She's also been handed the bill for their kid's pricey education. The judge ruled the Because of You singer will pay 70% of the tuition and other costs associated with their children's private school.
But Clarkson isn't strapped for cash. The decision was made based on the duo's monthly income. Blackstock makes $10,000 per month, while Clarkson pulls in a whopping $1.5 million!