There were reports that Geri Halliwell, Melanie Brown, Melanie Chisholm and Bunton were planning a reunion tour, 20 years after their first hit Wannabe in 1996, reported E! Online.
"Nothing's happening at the moment. If anything happens and it's concrete, and we decide on something, I will let you know," Bunton said.
Chisholm had tweeted, "Woke up this morning wondering whether I need to start practising my backflips???!!!"
Bunton was quick to revert to her.
"Do I need to put my pigtails in?!?!?"