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This is a birthday Zuma Rossdale won't soon forget!

Gwen Stefani has taken her three sons with ex-husband Gavin Rossdale on the road for her This Is What the Truth Feels Like tour, and during Tuesday night's stop in Austin, Texas she made sure her little guy had a moment in the spotlight for his special day. As Stefani was wrapping up her performance and the curtains were closing, she told fans, "Don't leave! Please, just stay for one second. There's a very special thing about to happen right here."

The 46-year-old pop sensation's middle child joined his proud mama on stage, who greeted him with a big hug. Zuma's entrance was followed by his big brother Kingston, 10, carrying a large birthday cake and 2-year-old Apollo was scooped up by Gwen to get a front row view of all the action. 

The entire crowd couldn't help but break out in a celebratory "Happy Birthday," and Zuma blew out his candles with the biggest smile on his face. Aww! 

As it turns out, Gwen's kids have been a huge help when it comes to behind-the-scenes efforts of the singer's tour, with Stefani telling concertgoers, "He's been working the tour; he's been doing quick-change in the back."

Gwen takes her kids' birthdays pretty seriously, as Kingston's celebration included a weekend in the great outdoors complete with fishing and a dune buggy adventure topped off with a helicopter ride alongside Blake Shelton. Apollo has also spent time with Gwen's boyfriend, as the singer documented on Snapchat two of her leading men on a hike earlier this year.