FLASHBACK FRIDAY: Spice Girls Serenade ET in 1997 After Releasing Their Debut Album

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The Spice Girls have been adding flavor to our lives for the past 20 years, and ET has been there every step of the way.

The all-girl group took the world by storm on July 8, 1996, with their breakout song, "Wannabe." Their debut single hit No. 1 in 37 countries, sold more than seven million copies, and earned them fans like the Olsen twins and Princes William and Harry. The song's parent album, Spice, is still the best-selling album by a female group of all time.

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A major part of their appeal was their message of girl power. Scary Spice (Mel B), Sporty Spice (Melanie C), Baby Spice (Emma Bunton), Ginger Spice (Geri Halliwell) and Posh Spice (Victoria Beckham) were five women with five very different personalities but one strong female bond.

"We're gonna bring girl power to your station!" the girls sang during their first interview with ET in 1997.

The following year, their star power was undeniable at the Spice World premiere. "When we were on that bus driving down a main street, I just felt really famous," Ginger Spice told ET on the red carpet.

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The group's journey began in 1994, when each of the girls -- strangers to each other at the time -- responded to a newspaper ad placed by two managers. Reportedly more than 400 women auditioned, but only five were selected. The girls eventually left their original management company and linked up with Simon Fuller.

After taking a hiatus in 2000, the group has reunited off and on since 2007, and they continue to pave the way for women in entertainment.