Gwen Stefani and Gavin Rossdale on Sunday as they celebrated their middle son Zuma's 13th birthday.The former couple - who were married from 2002 until 2016 and are also parents to Kingston, 15, and seven-year-old Apollo - each paid tribute to Zuma on social media along with heartfelt messages for the teen.
WATCH: Gwen Stefani's son Apollo is hilarious as he reveals his mum's dirty habitGwen, 51, shared two snapshots of her son - one showing Zuma as a smiling baby and a second recent headshot.
She wrote: "Happy 13th b day to my Zuma baby. We love u so much!! Gx."A post shared by Gwen Stefani (@gwenstefani) Gavin, meanwhile, posted a clip showing Zuma testing his boxing skills out on a dummy figure. "My sweetest boy turns 13," he wrote..
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