The various Spices were recently spotted at Geri Horner's house, and in an interview with the BBC, Melanie Chisholm - aka Sporty Spice - said the women had been talking about "opportunities and ideas" but that there was "nothing set in stone".
All five members last went on tour together for The Return of the Spice Girls in 2007.
Their debut single "Wannabe" first propelled the girls to fame in 1996 they became the best-selling female group of all time before splitting six years later. "So many kisses!", adding "exciting".
'The time now seems right to explore some incredible new opportunities together'.
The Spice Girls were expected to reunite in the past but Victoria pulled out, followed by Mel C.
And now publicist Jo Milloy has shed a little more light on the top secret meeting in a statement from the girls that reads: "We have enjoyed a wonderful afternoon catching-up and reminiscing about the unbelievable times we have spent together".
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The girl group have sold 85 million albums worldwide.
Brown, also known as Mel B., posted the same photo, "These wonderful women have helped me become who I am, so to all the girls out there remember "friendship never ever ends"!"
Other members of the group shared similar posts, with Emma Bunton writing her "future is looking spicy" and Horner assuring fans that girl power in alive and well.
Sporty Spice, 44, said "we need the girl power message more now than ever", suggesting that the band members had their famous legacy on their mind in addition to a £10 million paycheck when they chose to reform.
They had been seen earlier Friday arriving at Horner's home north of London, along with former manager Simon Fuller.
According to one report this reunion might produce another greatest hits compilation, a TV show (possibly in China) and a number of deals with major brands ... but no new music, and perhaps not even any concerts.