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 Through Unusual

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

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

Gwen Stefani's rarely-seen son Zuma, 15, spotted in LA with his

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