Big names like Cher Lloyd, Little Mix, and of course, One Direction were all made famous by The X Factor. But even though they've gone on to sell tons and tons of records and gathered huge fan bases, it doesn't mean we've forgotten about where it all started: The X Factor stage.
One Direction, Fifth Harmony, and even Little Mix were sometimes considered the underdogs in the competition. (It's hard to believe now, right!?) But they had their big moments that convinced the judges and everyone watching that they could win. M's flashing back to all the best performances by former X Factor contestants like 5H, 1D, and Olly Murs!
Click through the gallery to watch some amazing flashback videos from X Factor. Which performance was your fave? Tell us in the comments!