Tim Olstad Videos

The biggest band on the planet just happens to be a group of former The X Factor UK finalists! One Direction returned to The X Factor USA stage for an electric performance of "Story Of My Life."

The biggest band on the planet just happens to be a group of former The X Factor UK finalists! One Direction returned to The X Factor USA stage for an electric performance of 'Story Of My Life.'

Below, check out highlights from last night's THE X FACTOR on FOX as The Boys face the 4-Chair Challenge!

On last night's The X Factor on FOX, the top 40 acts were revealed and the judges were assigned their categories. Also on the show, it was announced that the remaining contestants would face a new round of competition known as the 'Four Chair Challenge'. Check out a sneak peek below!