The X Factor is a hit-making machine.
The British reality TV music competition series, created by Simon Cowell, first premiered back in September of 2004, going on for 15 seasons until December of 2018.
Along the way, the show featured a ton of celebrity judges, and produced some major heavy-hitter acts in the music industry.
We’ve rounded up all of the winners from every season of the original UK edition of The X Factor, and ranked them according to their following on Instagram.
Find out who is the most popular winning X Factor alum…
Source: justjared.com