The 42-year-old and Formula One boss Christian, 41, are set to tie the knot at the Woburn Estate in Bedfordshire.
It’s thought that Geri will be walking down the aisle with Emma Bunton’s sons Beau, seven, and Tate, four, and Mel B’s three-year-old daughter Madison.
A source told The Sun: “Geri wanted her wedding to be a family affair with her own immediate relatives and her Spice Girls family.
“The Spice Girls were an important part of her life and she’s over the moon that Mel and Emma’s children can play a part.”
Geri will also be accompanied by her nine-year-old daughter Bluebell, but the wedding won’t be the Spice reunion she was hoping for.
Victoria Beckham shared a snap on Instagram yesterday that revealed she was on her way to Singapore for work, and it’s been reported that Mel C also has conflicting work arrangements.
Christian’s parents are said to be snubbing the ceremony as they’re allegedly still upset with him for splitting from Beverly Allen, his partner of 14-years.
A source told the Mirror: “Geri and Christian are disappointed that his parents aren’t coming, but all his brothers, close family and pals with be there.”