Heartthrob Louis Tomlinson has revealed who his favourite X Factor USA judge is.

Now that the forthcoming new season of X Factor USA is about to hit television screens in America, the programme's official Twitter page has been gathering interest and it sent out a question to One Direction's Tomlinson earlier this afternoon (September 10) asking him who he likes best on the panel.

The new judges are Britney Spears and Demi Lovato, but music moguls Simon Cowell and LA Reid are also taking part and the 'One Thing' singer had an easy answer: "@TheXFactorUSA @SimonCowell of course #mrniceguy."

X Factor USA is set to premiere this coming Wednesday (September 12) at 8/7c on Fox in the U.S. Tomlinson then returned to the social networking site and cleared up a rumour about his current location, adding: "Just to confirm to loads of people asking I'm not in LA :)"

The One Direction lads also appeared on the Australian version of The X Factor today, where they acted as guest mentors and helped give advice to aspiring pop stars.