Remember S Club 7?
Well now Bradley, Hannah, Rachel, Paul, Jo, Jon and Tina look like this and they're going on tour again together next year.
Here's the moment the group made the announcement this morning.
It's going to be crazy - they're literally bringing it all back to venues up and down the country.
Understandably, the reaction on Twitter has been one of mild panic and teenage nostalgia.
Get your moves ready.