1. Spice Girls
Country: United Kingdom
Record Sales: 85 million
Girl groups may come and go, but nothing quite beats the phenomenon that the Spice Girls had become in the 90s. They ushered in an era of girl group frenzy with their perfectly choreographed stage acts and a string of record-breaking albums. With over 85 million physical sales alone the Spice Girls are still the reigning queens of the best-selling girl groups of all time.
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