MARY Byrne has been reunited with her X Factor judge Simon Cowell.
The Ballyfermot star was a semi-finalist on the show four years ago and was back in London with Louis Walsh to get a peak behind the scenes at the current show.
She planted a kiss on her hero Simon Cowell and said: "God, I've missed him. I've missed the X Factor.
"When I saw Simon, I said 'you probably don't remember me', but he did and put his arms around me. He rolled his eyeballs in that famous way he does when I kissed him, then he told me 2010 was the best ever year for X Factor.
Mary (55) took a tour around the stage and was overcome with emotion.
"It was surreal, having performed there before, looking at the whole set. I had this huge urge to get up on stage and start singing," she added.