Gwen Stefani celebrated her youngest son's third birthday on Tuesday.

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The 47-year-old singer and mom-of-three shared a series of Snapchat videos from son Apollo's birthday party at school.

"The Voice" coach was on hand as Apollo and his classmates finger-painted, sang "Go Bananas," ate cupcakes and broke into a Captain America pinata. She later thanked a fan on Twitter for wishing her son a happy birthday.

"Thank u for this b day wish for my little boy Apollo gx," she wrote.

Stefani shares Apollo, 8-year-old son Zuma and 10-year-old son Kingston with ex-husband Gavin Rossdale.

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She discussed taking her kids on tour with her over the summer on "The Ellen DeGeneres Show" in September.

"They had the best time," the star said. "[Zuma] walked me on and off the stage every single night ... he was so into it. It was way more incredible than I could have ever imagined."

Stefani and Rossdale split in 2015 after nearly 12 years of marriage.

The singer has since started dating country star Blake Shelton, and couldn't help but gush about her beau on "Late Night with Seth Meyers" last week.


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"I love Blake. He is the most incredible guy. Everybody loves Blake -- there's no way around it. he's just a sparkly, happy, amazing person," she said.

"The Voice" Season 12 will air its third round of blind auditions Thursday at 8 p.m. ET on NBC.