Feeds
The current Return of the Spice Girls World Tour ends in Toronto on February 26.
Halliwell told Billboard: "It probably won't happen ever again. I'm still absolutely blown away that we did more than one show. So right now I'm thinking this is it. This is the last time you will ever get to see this Girl Power, the five Spices on the stage as one."
However, the singer doesn't completely rule out the possibility of the group re-uniting in the future.
"What this reunion taught me is you can never say never," she said.
"If you had asked me 10 years ago whether there'd ever be a Spice Girls reunion concert, I'd have gone, 'No f******* way!'"
Earlier reports had emerged saying the band cut short their world tour due to group in-fighting, something Halliwell denies.
"Actually it's gone on longer than planned because we thought we were only going to go to the end of January. After February everybody had commitments - kids had to go back to school and that. So we had to leave places out that we would have loved to have gone to."
