July 8 marked the 20th anniversary of the UK release of the Spice Girls‘ hit debut single, “Wannabe.”

To commemorate the special event, Melanie “Mel B” Brown (Scary Spice), Geri Halliwell (Ginger Spice) and Emma Bunton (Baby Spice) posted a YouTube video which hinted at a potential reunion for the group. They invited all of their fans to a party. The three singers are calling themselves GEM and launched a new website. Victoria Beckham (Posh Spice) and Mel C (Sporty Spice) are noticeably missing from the video.

“You’ve stood by us for 20 years, and we want to say a big thank you,” Halliwell said in the video. Fans have been clamoring for a reunion tour and while two decades seems like a great milestone for this event, no details have been confirmed. The last time all five members performed was during the 2012 Olympics in London.

Victoria Beckham commented on “Wannabe’s” anniversary by promoting this powerful message of girl power on her Facebook page. The video was created in conjunction with GlobalGoals.org.