All the big names were there - from Auditionees like Jamuna and Eddie Lee to our 12 Live Show Finalists.
Here, we look back on what happened behind the scenes!
He's got the world at his feet, and it's time to celebrate! Our 2016 X Factor winner Matt Terry popped the cork in London earlier today as he toasted his victory!
Matt, a former waiter from Bromley, beat Saara Aalto to The X Factor crown on last night's Grand Final at The SSE in London's Wembley.
Matt's single, When Christmas Comes Around, is available to download and stream now.
Fancy following in Matt's footsteps? Then apply now for The X Factor 2017!
Tom Dymond, The Official X Factor Photographer, is always on hand when the action happens... and he's picked some of his favourite pictures from the series!