Gwen Stefani As A Mermaid For Halloween Babious 6 years ago Gwen Stefani,48 and her adorable sons were spotted Zuma, nine, and Apollo, three,trick-or-treating in Los Angeles on Halloween. The 48-year-old dressed as a mermaid as she carried son Apollo ans Zuma tagged along as he carried his costumes. Share this:Related Posts:Gwen Stefani and Blake Shelton tie the knotGwen Stefani's 60's style on The Voice red carpetWatch the Official trailer of The Little Mermaid Simone Ashley's Style at the Little Mermaid World Premiere