3. Katy Perry
This image appears in the gallery:
Who Should Replace Kelly Rowland As A Judge On The X Factor? You Vote
8. 3. Katy Perry
Next up at number three is Katy Perry! The 'Part Of Me' singer is no stranger to music talent shows, having served as a guest judge on both The X Factor and American Idol back in 2010. Katy is currently taking some time out to pen songs for the follow-up to her massively successful 2010 album 'Teenage Dream', so perhaps Simon Cowell could tempt her out of the recording studio with a seat on the UK show's judging panel?