The X Factor starts tonight Thu-13-Sep-12 09:24 Share this By Jay-Jay FeeneyThe X Factor USA starts tonight at 7.30pm on TV3. It’ll screen every Thursday and Friday at 7.30pm. We get it only 3 hours behind the US!Britney Spears is a judge and she admits she was nervous on the first day of filming. You May Also Like Britney Spears plans to retire after Las Vegas show Susan Boyle hounded by fans for money Want a photo with Britney? It'll cost you... $2.5K! Become a fan of The Edge on Facebook and on Twitter .