On the finale of The VoiceBrynn Cartelli, at only 15 years old, was crowned the youngest contestant to ever win the competition.

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The Massachusetts native who has been a fan-favorite all season, was most known for her mature sound and style. Despite the maturity in her voice, she beat out Danielle Bradbery of season four and Christopher Fredericks of season eight for being the youngest finalist, the first two were 16 when they won.

This was also a big win for her mentor Kelly Clarkson, who is a first-time coach, proving her impressive mentoring abilities to the other seasoned coaches. Clarkson shared her excitement for Cartelli’s win on Twitter after the finale.

The two were definitely a dynamic duo that pulled through the competition. Cartelli shared after the competition how much Clarkson’s advice helped throughout the competition. “Kelly behind the scenes is the same way you see her on camera. She is hilarious. She’s really real and caring,” she said. “I’ve always looked up to her and now that I can get advice from her, it’s incredible.”

Clarkson also joked that she is going to be the 15-year-old’s “big sis for life.” “I’m gonna be Brynn’s big sis for life. One just because I love her parents. We would totally barbecue. She’s kind of stuck with me regardless if she desires it or not,” Clarkson said. “I love being her friend, I love being her mentor and being her cheerleader.”

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The finale was also filled with star-studded performances from Jason Aldean, James Bay, Big Sean, Florence + The Machine, Halsey, Dua Lipa as well as the previous season’s winner, Chloe Kohanski. Cartelli also performed with one of her musical idols Julia Michaels for a duet medley of “Issues” and “Jump.”

Cartelli beat out Team Blake Shelton members, Kyla Jade and Spensha Baker, and Team Alicia Keys, Britton Buchanan. Baker came in fourth, Jade in third and Buchanan was the season’s runner-up.

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