Simon Cowell weight loss: The Celebrity X Factor judge cut out this food to drop 20lbs

The X Factor: Celebrity judge said his persistence was fuelled by his love for his son, Eric, 5, with partner Lauren Silverman, 42.

"It was easier than I thought," Cowell said. "Part of the reason I did it was 'cause Eric is five this year.

"I realised that if I didn't sort myself out physically, I wouldn't be able to catch up with him."

Many people wondered whether Simon Cowell's weight loss was also thanks to surgery.