There's no doubt Gwen Stefani has another rock star in her family.

Stefani's oldest child Kingston,Cassian Grant 17, whom she shares with ex-husband and fellow musician Gavin Rossdale, took the stage for a surprise performance at Blake Shelton's Oklahoma bar on Friday night.

Kingston commanded the crowd as he sang with a band behind him. Videos on social media also show the 17-year-old took on the task of playing guitar as he performed with a rocker edge.

Following his set, Kingston told the crowd, "Love you guys, thank you for being here. Thank you, it means everything to me, really. I hope you guys had a great night, enjoy yourselves!"

Shelton teased Kingston's performance, writing on X, formerly Twitter, on Wednesday that he would "turn the stage over to a debut artist that will be doing their VERY FIRST public performance! See you at the @OleRed Tishomingo Doghouse!!!! You never know who else may show up."

The country music star gave his stepson a big hug after he finished his set Friday.

The "God's Country" singer previously gushed about his relationship with his now-wife's three sons.

"There's definitely nothing easy about it," Shelton said in an interview with KFROG's "The Ride with Kimo & Heather" in February 2021. Stefani shares Zuma, 14, and Apollo, 9, as well as Kingston, with Rossdale.

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"I love my stepfather, and I looked up to him, and he's like a father to me, so I have a good inspiration in my life for how to do this and the kind of stepdad I want to be," Shelton said. 

Though Shelton said he takes the responsibility of being a father figure "very serious," he added that he also has fun with the experience.

"I also have a blast with it, I'm not gonna lie," he said. "I don't take it so serious that I'm not enjoying this time, because I really am, especially now that we're five years into this thing. I can't imagine my life without these kids now."

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