Simon Cowell uses a booster seat on 'Britain's Got Talent'.
The 53-year-old judge - who sits on the panel with Alesha Dixon, Amanda Holden and David Walliams - was caught sneakily using a padded cushion to give him extra height while filming auditions for the talent competition in Scotland earlier this week.
Ian Hunter, an audience member at the Glasgow auditions, told The Sun newspaper: "We went down the front to get a photo during one of the breaks and I noticed the booster seat. It's Simon down to a T. He's a small man with a big opinion and a big personality.
"Everyone I showed the photos to was laughing."
However, a spokesman for the judge and show boss has insisted the extra padding is just a cushion and not a booster seat.
He told the Daily Mirror newspaper: "It's not to make him look taller, it's just a cushion he uses from time to time."
Simon is thought to be between 5ft 7in and 5ft 9in in height, considerably shorter than 'Little Britain' comic David Walliams, who stands tall at 6ft 2in.
The TV mogul was often ridiculed for his height by former 'BGT' judge Piers Morgan.
He previously claimed: "When we're on 'Britain's Got Talent', he's smaller than me, then suddenly his three pillows arrive and he's taller than me."