The band that consisted of Melanie Chisholm, Victoria Beckham, Geri Halliwell, Emma Bunton and Melanie Brown, reunited for last years's Olympic closing ceremonies, reported Daily star.
Brown, 38, is said to be persuading her bandmates, especially Victoria to hit the stage again.
On being asked about the reunion, Brown said. "I hope so. I just had a conversation with Melanie C, so hopefully things will get moving.
"We got together for the Olympics and we managed to pull that one off. Posh was very hesitant about doing anything after the Olympics," she added.
"Mel sees the 20th anniversary as a huge milestone and perhaps a real last chance to have the girls on stage. But Posh was very hesitant about doing anything after the Olympics. As time ticks, her interest wanes," a source said.
"The other girls feel some one-off shows could work, but a world tour is out of the question. Though the money on the table would be out of this world," the source added.