Katy Perry & The Wanted Perform On X Factor UK

California singer Katy Perry and British boyband The Wanted were the celebrity guest performers on Sunday's (October 16th) results show of The X Factor UK - Ms Perry performed her sixth "Teenage Dream" single "The One That Got Away" - she sang it acoustically! - while the The Wanted guys set the stage ablaze with a pretty awesome performance of their brand new single "Lightning". Enjoy!

What do YOU think of these performances?