Fastexy:Gwen Stefani's son Kingston Rossdale plays surprise performance at Blake Shelton's bar

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

Stefani's oldest child Kingston,Fastexy 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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