'The X Factor' Live Show 1 performances UK vs US - In pictures
Tonight, there will be the show's first ever quadruple elimination and there is no public vote, so it's all down to pleasing the judges. Did the acts do enough to avoid the mass cull?
Scroll through our gallery for pictures of Frankie Cocozza, Kitty Brucknell, The Risk and the other 13 acts hitting the famous Fountain Studios stage for the very first time.
The X Factor results show airs on Sunday at 8pm on ITV1.
Copyright: Ken McKay/TalkbackThames/Rex Features