From the auditions to superstardom. Here are 18 of the most successful X Factor UK contestants.
Jedward, "As Long As You Love Me"
The X Factor UK / Via youtube.com
Jedward, "Lipstick"
JedwardVEVO / Via youtube.com
Janet Devlin, "Your Song"
The X Factor UK / Via youtube.com
Janet Devlin, "Wonderful"
Janet Devlin / Via youtube.com