The 45-year-old singer is reportedly keen for the girl band - which also includes Victoria Beckham, Mel B, Emma Bunton and Mel C - to perform one of their first reunion gigs at Prince Harry and Meghan Markle's spring wedding.
A source told The Sun on Sunday newspaper: "Geri suggested the Royal Wedding is a fantastic opportunity, and that they should offer to perform at the reception. She has been told that Meghan was a big fan of the Spice Girls."
And the wedding fits in perfectly with Geri’s idea that the reunion should be very British. She sees it as a big part of their identity, and one they should keep. But at the moment the girls are not all decided on the topic of performing.
And surprisingly it is Mel C, not Victoria Beckham, who is refusing to get on stage.
"Despite reports to the contrary, Victoria is now quite proud of the Spice Girls and their achievements. She feels strongly that if they reunite, they will have to perform. Mel is not so sure she wants to go down that path and will need some persuasion if they are to sing together again."
Meanwhile, Mel C previously revealed the girl group are keen to inspire a new generation of young girls.
She said: "There are so many negative things going on in the world all the time and we feel like the Spice Girls was always a little bit of fun -- something to enjoy when it's tough times. We now realise some of the impact that we did have on young people at the time, and now we all have kids, there's another generation that enjoy our music. We just want to empower people, we want to empower girls."
We were talking about opportunities, ideas we have for the future. It's just great to be back in Spiceworld and to see the reaction and it's so lovely to know that people out there still care. I think we always shared the same vision so it's really nice to be back and thinking about the future. We are really excited to see what the future holds."