Instagram/Cardi B Celebrity Cardi B becomes Zevia shareholder & brand ambassador. The rapper partners with the zero-sugar soda brand, shaping its cultural strategy. March 21, 2026 AceShowbiz - Cardi B has taken a significant step in her expanding business ventures by becoming both a shareholder and the official brand ambassador for Zevia, the zero-sugar soda company. The Grammy-winning rapper announced a multi-year partnership with Zevia, highlighting that this collaboration is more than just a typical sponsorship.