X Factor boss Simon Cowell has insisted that the show doesn’t need A-list stars on its judging panel.
He told Extra that getting big names to take part wasn't worth it in the end.
"When we first launched [Pop] Idol in the UK years ago, we didn't think for one second there had to be an A-list star on the panel," he explained.
"Everyone on the panel was really unknown. Firstly, they are incredibly expensive - that is millions you lose on something else.
"Secondly, they have to make the time commitment and on my show, they have to work five days a week. Thirdly, they have to be interesting… I'm not playing this game where we have to compete on the level of A-lister stars."
Simon added: "You can lose focus on what the show is all about, and at the end of the day the most important thing is the contestants."
Both Simon and record label executive LA Reid have been signed up for a second series of The X Factor USA, while the UK show currently has no confirmed judges.