Geri Halliwell performs acoustic Spice Girls 'Wannabe' - video
The singer performed the classic pop hit during her appearance at the Breast Cancer Care Show in London last night (October 3).
Halliwell also played her upcoming single 'Phenomenal Woman', which is due to feature on her forthcoming fourth studio album.
A preview of the new track is expected to be uploaded to her YouTube account in the very near future.
Earlier this year, Halliwell teased the imminent release of her new music, saying: "I've been mastering my album and I'm really excited that the pop career is about to come back."
Meanwhile, Halliwell recently insisted that the Spice Girls will always "love and accept each other", despite past disagreements and feuds.