Girl power is returning, but with fewer girls.

On the 20th anniversary of the massive hit "Wannabe," three of the original Spice Girls — Geri "Ginger Spice" Halliwell, Emma "Baby Spice" Bunton and Melanie "Scary Spice" Brown — teased their fans and announced that they have a new name, GEM.

In a Youtube video, GEM, an acronym for their first names, if you hadn't figure that out, thanked their fans for being with them for over 20 years.

"We've been thinking, we have the best fans in the whole entire world," Mel B says at the beginning, while Geri adds, "You've stood by us for 20 years, and we want to say a big thank you."

The three women go back and forth chatting with each other.

Emma says, "We've had our ups and downs, but you've always been there."

Insert Mel: "And we want to celebrate and have a party," Brown continues, teasing the a tour may be in the works for the trio. "And when we do, you're all invited!"

The video ends with a message that reads "Happy 20th birthday to all our fans."

It continues, "This is a celebration for you! We hope to tell you soon, what you want, what you really really want. #WANNABE."

"Wannabe" was released in 1996 and became the highest-selling debut single by a female group in the history of pop music.

Fans have long clamored for a reunion tour. The last time the original five members - GEM and Victoria "Posh Spice" Beckham and Melanie "Sporty Spice" Chisholm, performed together was at the opening ceremony for the 2012 Olympics in London.

In 2007 they embarked on a reunion world tour, as well.

In addition to the 20th anniversary video, Mel B also posted a celebratory photo of GEM in bed with party hats.

Yippppeeee https://youtu.be/QxZPC55SpmY

A photo posted by Mel B (@officialmelb) on

The girls relaunched the Spice Girls website to indicate the new name.

Eliot Kennedy, the group's legendary producer, told BBC that new music is in the works, too.

"We have been in the studio, with just three of them - Mel B and Geri and Emma - and we had a fantastic couple of days. We wrote a brilliant song and the energy was exactly like it was 20 years ago, just as enthusiastic, just as much to say, just as much to celebrate.

"I think they have something to do with way female artists are perceived in the pop charts nowadays, I think they've had a massive effect on pop music and pop culture, so it's a good time to celebrate."