The girls added that not taking part puts Posh in a very unique position: "She is very excited for us, and it's going to be odd".
They will complete a 6-date United Kingdom stadium tour in June.
Speaking about the hard decision to go ahead with the reunion without Victoria, Mel said: 'It is tough because obviously she's a huge part of the band'. Mel B answered: "Me, because I'm divorced".
Sources tell us the 4 out of 5 Spice Girls who are hitting the road next summer across the pond are set to be making almost $550k a head for each of their 6 shows in Britain - totaling about $3.2 million each.More news: Why Trump can end birthright citizenship by executive order
The rest of the girl group then told the America's Got Talent judge to 'stop it, ' before Mel C quipped: 'She's fibbing.
They got together again to perform at the London 2012 Olympics closing ceremony. "I wouldn't be here without my girls", she said.
"We support her and she's supporting us".
But Mel B, in typically cheeky form interjected: "She is joining us at Wembley on June 14th". "It's just the four of us who are fully confirmed, but you know, Vic might join us at some point", she told Britain's ITV.
During their 1990s heyday, the Spice Girls released three studio albums, 13 singles and a feature film.
The five-piece group formed in 1994, split in 2000, but reunited for a world tour in 2007.