X Factor boss Simon Cowell is set to make an appearance in tonight's show.
According to the official X Factor UK Twitter account, the music mogul will be "back" on the series tonight giving some advice to the remaining contestants.
The tweet read: "Mr @SimonCowell is back on the UK X Factor tonight!!! Find out what words of wisdom he has for this year's finalists"
Tonight the final eight acts will be singing hit songs with a full orchestra as part of Big Band week, before one more is axed in Sunday night's results.
It was reported earlier this month that Simon felt that this year's hopefuls needed to work harder, asking contestants to dig deeper.
And this week, he commented of the latest sing-off results on Twitter: “And how did Tamera get in the bottom two on the uk show. She is a potential star.”
Speaking to Star magazine, a source said: "Simon basically thinks the acts need to up their game."
The X Factor 2013 continues on ITV this evening and Sunday night with Big Band week from 8PM, featuring performances from Robbie Williams and Celine Dion.
Browse backstage pictures of the weekend's latest live show below...