Gwen Stefani took to social media with the sweetest update alongside her son, Zuma, in celebration of his fourteenth birthday.MORE: Gwen Stefani looks so different in make-up free photo from her pastThe pop icon shared a heartwarming carousel featuring the most adorable throwback snaps of her middle son, including a close-up shot of the youngster as a baby, as well as a clipping of his first-ever baby photos featured in US Weekly magazine.WATCH: Gwen Stefani films never-ending ranch with Blake Shelton - and wowCaptioning the photos, the doting mother penned: "Happy 14th b day ZUMA!! we love u!! Gx."READ: Gwen Stefani and Blake Shelton's $13m family mansion is a world of funSEE: Gwen Stefani and Blake Shelton baby rumours are swirling - are they true?The exciting update also showed a sneak peek of the 14-year-old's elaborate birthday cake which featured lavish decorations including a baseball, M&M's, Mcdonald's fries and doughnuts. The words "Happy 14th birthday Zuma," were written at the bottom of the masterpiece in vibrant orange icing.A post shared by Gwen Stefani (@gwenstefani)The post was so sweetBirthday wishes from friends and fans of the star flooded the comments section of the exciting post.