Reggie 'N' Bollie shared the stage with Fuse ODG and Craig David on tonight's X Factor 2015 final.
The pair performed one of their classic mashups for their special celebrity duet, singing Rewind with Craig and Fuse on stage in London.
And by the end of the performance, mentor Cheryl had also joined the group too.
"We are living the dream, can you believe it? Reggie n Bollie on stage with Craig David and Fuse ODG," reacted the RnB after their performance.
Craig told host Caroline Flack: "The guys are amazing you've brought something special to the show. Thank you for having me on the stage."
And Fuse ODG revealed: "I've literally flew in from Ghana for these guys!"
Earlier in the live show, Reggie n Bollie took to the stage in front of 10,000 fans at Wembley Arena with a cover of Jump by Kriss Kross as they sang alongside fellow finalists Louisa Johnson and Che Chesterman.
The pair then took to the stage for their main solo performance of the night, another upbeat mash up, this time made up of Spice Up Your Life and Boom Boom Boom by the Spice Girls and Outhere Brothers respectively. Simon Cowell compared it to a "strawberry and liver milkshake" at first before conceding it was "fantastic" despite some shouty vocals. "I have a feeling you can actually win the show," Simon concluded.
But a not at all biased Rita Ora claimed it was "cruise ship" and accused them of making it into a "shouting competition".
Did you rate Reggie n Bollie's performances this evening? Tell us in the comments!