It seems there's a bug going around the celebrity circuit. First Jonathan Ross is hit by a bout of swine flu, and now Simon Cowell is ill, too.
The music mogul was forced to pull out of Britain's Got Talent auditions this week, after falling ill with a bad bout of flu.
All is not lost for the show, however, after Louis Walsh stepped in to save the day.
X Factor judge Louis is joining Amanda Holden and Piers Morgan at the Birmingham auditions on Wednesday, while Simon rests up at home.
"He just needs some rest and he’ll be as good as new," a source tells the Daily Mail.
"He has been under the weather for the past week and it was clear that he could not join the judges today."