Speculation suggests professional conflicts and potential internal feuds have prevented members of the band from coming together to honour the release of their debut 1996 album Spice, but Mel B said the rumours are unfounded, reported Contactmusic.
"It's an ongoing thing we keep talking about, and it is our 20th anniversary, so we're going to do something," she said.
"We're just trying to figure that out right now. There will be something happening.