Popstar Katy Perry premiered her new single on X Factor

The California Gurl's songstress played new single The One That Got Away on the X Factor stage, sporting an acoustic guitar rather than her usual cupcakes and lolipops

Speaking to Dermot O'Leary after the performance, the star revealed she had just played her 95th performance and jokingly claimed judge Gary Barlow was trying to "sabotage" her after suggesting she go to a nightclub whilst her stay in Liverpool.