Olly Murs has revealed being a guest judge on The X Factor made him proud.
The former Xtra Factor host, who was runner-up in the sixth series of the ITV show in 2009, confirmed he will help Gary Barlow in the judges' houses round.
"Hey all, so there have been loads of rumours about it & I can confirm that YES I'll be Gary Barlow's Guest Judge on this year's X Factor next weekend. Very proud moment for me, going full circle from contestant to judge," he wrote on Facebook.
Olly, who has enjoyed chart success with hits such as Troublemaker, Dear Darlin' and Heart Skips A Beat, admitted it wasn't easy swapping roles and joked that he could rival Take That star Gary and the show's creator Simon Cowell in the mean stakes.
"Was hard to be on the other side, especially with me knowing how the contestants are feeling," he said.
But the 29-year-old added: "Great experience, loved it. The New Mr Nasty haha lol ;)"
Gary's Take That bandmate Robbie Williams will be Sharon Osbourne's right-hand man, while Nicole Scherzinger is supported by R&B songstress Mary J Blige to help whittle down her contestants.
And Louis Walsh will be surrounded with a trio of talents in the form of Nicole Appleton, Shane Filan and Sinitta.
The judges' houses episodes will be shown on ITV on October 5 and 6.