The 65-year-old music mogul sported a dark grey T-shirt with a scoop neckline ... others spend decades trying to do,' head judge Simon Cowell said. 'You're that good, seriously good.

SIMON Cowell looked lean as he stepped out for the latest round of America's Got Talent auditions in Los Angeles. The music mogul, 63, has lost four stone after re-vamping his lifestyle.

Simon Cowell loves nothing more than bringing along ... Meanwhile, Simon opted for his go-to casual attire with a charcoal ...

The proud dad opted for a gray T-shirt and jeans ... Gilbert Flores/Variety via Getty Simon Cowell Says Son Eric ‘Without Question’ Saved Him After Death of His Parents: ‘Made Me Happy ...

I should, right? Otherwise, he is going to go in a tight t-shirt. I want to settle it. Simon Cowell Just Got Real About Weird Fan Requests, And Judging A Couple’s Sex Life Probably Takes The ...

Simon completed his dark comfortable outfit with a pair of eye catching red tinted glasses which help prevent migraines. Meanwhile Heidi Klum turned heads as she went braless under a brown ...

Eric, 10, wore a white T-shirt and jeans with sneakers for the red carpet. His dad wore a similar casual outfit, opting for a gray T-shirt, jeans and dress shoes. Eric, 10, wore a white T-shirt ...

Whenever Simon Cowell’s son makes any kind of public ... clad in a crisp white t-shirt and blue jeans, striking a pose as he stood tall in front of his parents. The proud dad wrapped his arms ...

Simon Cowell has swapped his Cuban heels for ... light blue high-wasted denim jeans and a basic T-shirt. However, on a recent outing to Pasadena Civic Auditorium, California to film American's ...

The father and son duo rocked similar outfits for the outing, both donning dark T-shirts with Simon opting for a pair of black tracksuit bottoms while Eric donned black shorts and Nike trainers.