She confessed: "It's been a bit of a journey". It followed public reaction to an online clip of her dancing with school children in Africa last August which went viral and saw her dance moves likened to a robot. It just happened and we just giggled at it and that was it.
"Hopefully when Geri gets asked that, which hopefully she will after this, she won't deny it, because it was just a thing, a fun thing".
Mel added: "She [Geri] is going to hate me for this because she is all posh in her country house and her husband, but it's a fact".
The group went on hiatus in 2000 after recording their third album Forever, and are best known for their hits including Wannabe, 2 Become 1 and Spice Up Your Life. "She is looking forward to the tour".
Victoria Beckham won't be joining the girls though, as she concentrates on her fashion empire.