The former members of the Spice Girls have celebrated the 30th anniversary of their debut single Wannabe saying it “changed our lives forever”.The 1990s pop group, made up of Victoria Beckham, Emma Bunton, Melanie Brown, Melanie Chisholm, and Geri Halliwell-Horner, rose to the top of the charts after Wannabe was released in 1996, and went on to become one of the biggest girl groups of all-time achieving nine UK number one singles.Chisholm, who was known as Sporty Spice in the band, posted on Instagram: “30 years of girl power, happy birthday Wannabe, I love you @emmaleebunton @victoriabeckham @officialmelb @gerihalliwellhorner @biffco, and Matt Rowe (the latter two having written the song).“The song that changed our lives forever.”Brown, who was Scary Spice in the group, posted the song’s