Gwen Stefani Shares Rare Photos of Son Zuma on His 15th Birthday

Gwen Stefani's middle son is growing up fast! On Aug. 21, the singer celebrated her mini-me Zuma's 15th birthday with a sweet photo montage on Instagram. Set to Zach Bryan's "Something in the Orange," the video compiled snaps from Zuma's childhood to the present day, including a cameo by stepdad Blake Shelton and selfies of blond-haired Zuma looking so much like his mom. "Happy 15th birthday Zuma !!! we love u more than anything," Stefani captioned the post.

Stefani shares Zuma and her other two sons, 17-year-old Kingston and 9-year-old Apollo, with ex-husband Gavin Rossdale, whom she divorced in 2015. "The Voice" judge loves celebrating her boys on social media, paying tribute to both Kingston and Apollo with similar photo compilations on their birthdays earlier this year. Rossdale also posts about his sons from time to time, sharing a heartwarming message for Zuma's 14th birthday last year. "My sweetest boy you are the shine of my sun," the musician wrote on Instagram. "I love everything about you.a magical boy indeed. layers on layers.so happy you're mine."

Stefani's eldest child, Kingston, recently made headlines for taking the stage at stepdad Shelton's bar in Oklahoma, marking his first live performance. Shelton hyped up the teen before his gig, telling the crowd, "I'm actually honored to be the first one to introduce this guy to the stage for the very first time ever . . . First and foremost, this guy is an artist. He's the real deal, and you guys are gonna be able to say that you were there at his very first ever public performance." Stefani's kids similarly supported Shelton while attending the unveiling of his Hollywood Walk of Fame star in May.

See every adorable throwback photo Stefani included in Zuma's 15th birthday post below.