Gwen Stefani celebrates son Zuma's 15th birthday with rare photos

Gwen Stefani celebrated her and ex-husband Gavin Rossdale's son Zuma's 15th birthday with rare photos of the teenager via Instagram.

Gwen Stefani celebrates son Zuma's 15th birthday with rare photos

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Gwen Stefani celebrates her son Zuma's 15th birthday with a number

Gwen Stefani Celebrates Son Zuma's 15th Birthday Through Unusual

Gwen Stefani's sons make rare appearance in family photo that

Gwen Stefani Celebrates Son Zuma's 15th Birthday Through Unusual

Gwen Stefani's rarely-seen son sings wearing cowboy hat during

Gwen Stefani's rarely-seen kids Kingston, 17, Zuma, 15, & Apollo