Gwen Stefani Can’t Believe Her Little Boy Is 18 — And the Childhood Footage She Shared Makes the Milestone Even More Emotional It feels like yesterday that Zuma was the little boy appearing beside his famous mom. Now, Gwen Stefani’s middle son is officially an adult. To celebrate his 18th birthday, Gwen opened the family archives, sharing intimate memories of Zuma as a baby and child alongside clips revealing the talented young musician he has become. And with Zuma already stepping onto stages of his own, those old videos suddenly carry an entirely different meaning. From a little boy with a guitar to an 18-year-old finding his own path in music — see Gwen’s touching tribute below 👇

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Gwen Stefani Marks Son Zuma’s 18th Birthday With Emotional Family Memories — and a Glimpse at His Growing Musical Talent

For Gwen Stefani, Zuma’s 18th birthday wasn’t simply another family celebration. It marked the moment her middle son officially entered adulthood — a milestone the singer admitted was difficult to believe after watching him grow up before her eyes.

The 56-year-old No Doubt star celebrated Zuma Nesta Rock Rossdale’s birthday by sharing an emotional montage filled with memories spanning his childhood and teenage years. The collection included baby photos, playful family moments and footage of a young Zuma losing a tooth, alongside more recent clips revealing just how much he has changed.

But amid all the nostalgia, another thread ran through Gwen’s tribute: music.

The montage featured Zuma singing and playing guitar, offering another glimpse at a talent that has increasingly brought him onto stages connected to his famous musical family.

“Happiest 18th birthday Zuma i cannot believe u are 18 today!!” Gwen wrote, before describing watching him become a “sweetest + most talented young man” as one of the greatest gifts of her life.

From childhood memories to a young musician

Gwen's sharing offered a glimpse at the teenager's growing musical talent

Zuma is the middle of Gwen’s three sons with her former husband, Bush frontman Gavin Rossdale. They also share Kingston, 20, and Apollo, 12.

Growing up with musicians on both sides of his family meant music was never far away, and Gwen’s birthday montage highlighted signs of that connection from an early age.

One childhood clip showed Zuma performing “Twinkle, Twinkle, Little Star” with a small guitar. Years later, the instrument is still in his hands: the birthday montage also included him playing guitar and singing Zach Bryan’s “Dawns.”

That progression has already begun moving beyond family videos.

Zuma has already stepped onto the stage

Zuma possesed showmanship from a very early age

In July 2024, then 15-year-old Zuma performed publicly at his stepfather Blake Shelton’s Ole Red venue, taking the stage with an acoustic guitar and cowboy hat to perform Zach Bryan songs including “Oklahoma Smokeshow.”

It was an interesting musical direction for the son of two rock and pop stars. While Gwen rose to fame as the unmistakable voice of No Doubt and Gavin has spent decades fronting Bush, Zuma showed an increasingly visible interest in country music.

His father has even joked about Zuma catching the “country bug,” while making clear that he supports whatever music his son chooses to pursue.

Just weeks after his Ole Red appearance, Zuma experienced another memorable stage moment when Gavin celebrated his 16th birthday during a Bush concert, bringing his son before the crowd as thousands joined in the birthday celebration.

Kingston has inherited the musical instinct too

Zuma showing a cheeky grin in Gwen's shared post

Zuma isn’t the only Stefani-Rossdale son who has ventured onto a stage.

Older brother Kingston made his own public performance appearance at Blake’s Ole Red venue in Oklahoma in August 2023. After performing for the crowd, he thanked those watching and said their support meant everything to him.

For Gwen, seeing her children discover their own musical abilities has been emotional.

When speaking about Kingston’s early performance, she described becoming overwhelmed as she watched him begin discovering his own gift — an experience that must feel particularly meaningful for someone whose own life has been shaped by music.

Blake Shelton has watched their confidence develop

A young Zuma following in his famous parents' footsteps from an early age

Since marrying Gwen in 2021, Blake Shelton has also had a front-row seat to Kingston, Zuma and Apollo growing up.

And as Kingston and Zuma have started performing publicly, Blake has been particularly struck by how comfortable they appear under the lights.

Speaking about his stepsons’ musical abilities, Shelton said their ease onstage could partly come from spending their childhoods around professional performers. With Gwen, Gavin and Blake all providing different perspectives on life in music, the boys have spent years watching concerts from the side of the stage and seeing what performing professionally actually involves.

Shelton admitted that he himself wasn’t nearly as calm when he first began performing.

That makes Gwen’s latest birthday montage feel like more than a collection of childhood memories.

The little boy seen singing with a toy-sized guitar is now 18, stepping onto real stages and beginning to reveal what his own relationship with music might become.

For Gwen, however, the milestone appears to be about something even simpler: watching her son grow from the child captured in those old family videos into the young man standing in front of her today.