The Spice Girls. This all-girl band formed in 1994 was the greatest band to emerge from Britain after the Beatles. The first single `Wannabe' by the Spice Girls was brought out by Virgin. It made them instant celebrities globally. `Wannabe' topped charts in more than 30 countries. Spice Girls' first album `Spice' became the all-time greatest hit of a female band in music history. Spice Girls symbolized new `Girl Power'. But Geri Halliwell walked out of group in 1998. All five have reunited only on two occasions, including the Closing Ceremony of the 2012 London Olympics.