Popular acts set to perform onstage at "The X Factor UK" series 12 are Fleur East, Little Mix, Adele, One Direction, Cold Play and eliminated acts including 4th Impact.
On Dec. 10, Thursday, the British reality television music competition teased the news with a simple word with a tweet saying, "Hello."
On the same day, the sister act band 4th Impact tweeted an image of them with Lauren Murray and Louisa Johnson with a caption, "Yeah!!!! Reunited with @laurenmurray @louisa."
In a statement obtained by Billboard, production firm Thames made an announcement about "Someone Like You" hitmaker saying, "Adele will be taking to 'The X Factor' stage to perform her number one single 'Hello' during the series grand finals."
This will mark the award-winning singer's first-ever performance on The X Factor and follows the release of her record-breaking album '25' last month," Thames added.
The producers confirmed British rock band Coldplay and 1D will also perform. The Brit rock band will perform "Adventure of A Lifetime" from their new album "A Head Full of Dreams," while the boy band will perform "Infinity."
Eliminated acts including all-Filipina girl band 4th Impact, Lauren Murray, Anton Stephans, Alien Uncovered, Mason Noise, Max Stone, Kiera Weathers, Bupsi, Monical Michaels, and Sean Miley Moore are expected to return to the show, according to Unreality TV.
Before the sister act girl band was invited to come back at "The X Factor UK" series 12, the group got some gigs including G.A.Y. concert, "Clothes Show" event and a private gig in London.
The remaining acts who will compete at "The X Factor UK" series 12 finals are Johnson, Che Chesterman and Reggie N Bollie.