Britain's Got Talent is back with a special version of the ITV talent show, celebrating the past 13 years of the show worldwide.
For six weeks, a whole list of acts from the past will be taking each other on in the battle of all battles.
Former BGT stars will be joined by contestants and champions from other series including the Asian, American and Australian series of the show.
Only two contestants can go through each week to the final: one is decided by the audience, and the other is chosen through a Golden Buzzer, pressed by either one of the judges or hosts Ant and Dec.
Now, the first line-up for the first show has been confirmed, ahead of its launch this weekend.
You'll be seeing some very familiar faces, with four BGT acts taking another shot at the show.
Series one winner Paul Potts is joined by his then fellow series one finalist Connie Talbot, who was just six years old when she first appeared.
With them is Simon Cowell's 2016 Golden Buzzer act Boogie Storm, while Ashleigh and Pudsey star Ashleigh Butler returns with new dog Sully.
Joining them are a series of big acts from India, America, Australia, Asia and Ukraine.
Ukraine's Got Talent winner Kseniya Simonova, American's Got Talent's father and daughter duo Bello and Annaliese Nock, and Asia's Got Talent illusionist Sacred Riana are all on Saturday's show.
Joining them is India's Got Talent winner Sonali Majumdar and former finalist Sarder who have united for their dance act Bad Salsa.
Also on the list are twin brothers The Nelson twins - a comedy duo from Australia.
Only two from the episode will be able to go through to the final, but viewers will have to tune in on Saturday to find out the chosen acts.
Britain's Got Talent: The Champions airs Saturday at 8pm on ITV.
