The X Factor Live Shows kick off this weekend with all twelve acts no doubt singing up a storm in anticipation. While it's all well and good watching the wannabes get up there and give it a go, it's also great to see the pros do their thing. It makes that irritating wait for the results on a Sunday night seem that bit easier.

So what performers will be kicking things off this weekend? The powers that be of X Factor have just announced that Taylor Swift and Pharrell Williams will be taking to the stage on Sunday.

Seven time Grammy award winner and international superstar Taylor Swift will be on performing her new single ‘Shake it Off’. Also bringing the musical action will be triple platinum artist, singer, music producer and fashion designer – Pharrell Williams who will be singing ‘Gust of Wind’.

Also, in case you were wondering, the theme for the contestants this week in number ones. Easing them in gently so. Well, until one of them is kicked off on Sunday night. But sure at least they will have Taylor and Pharrell there to dry their tears.