Instagram/Mel B & Emma Bunton & Mel Music Spice Girls documentary delayed? Mel B reveals why a 30th-anniversary reunion project hasn't happened due to demands for honesty and transparency. April 4, 2026 AceShowbiz - As the 30th anniversary of the iconic British girl group approaches, anticipation among fans for a potential reunion or project is growing. However, Mel B recently shed light on why a documentary about the Spice Girls has not yet materialized.