Simon Cowell is upbeat as he arrives for AGT filming in black sweater and white shorts

Simon Cowell is upbeat as he arrives for AGT filming in casual ensemble of black sweater and white shorts

He is still recovering after breaking his back in an electric bike accident last year. 

But Simon Cowell was in an upbeat mood as he arrived at America’s Got Talent filming in Pasadena in Southern California on Sunday.

The media mogul gave a thumbs up as he joined fellow judges Heidi Klum, Sofia Vergara and Howie Mandel for the new season taping. 

Relaxed: Simon Cowell kept it casual as he arrived at America’s Got Talent filming in Pasadena in Southern California on Sunday wearing a black sweater and white knee-length shorts

Cowell was dressed down in a black sweater paired with white knee-length shorts that had frayed hems.

He added black socks and black trainers and sported large round sunglasses. 

The 61-year-old Londoner had some heavy stubble and he flashed a ‘thumbs up’ as he arrived at the taping venue.

In August, he had been rushed to hospital where he underwent surgery to fix his spine and had to cancel his planned TV work for the rest of 2020.

Back at work: The 61-year-old Londoner, who is still recovering from breaking his back in a bike accident in August, had heavy stubble and flashed a 'thumbs up' as he arrived at the venue

Back at work: The 61-year-old Londoner, who is still recovering from breaking his back in a bike accident in August, had heavy stubble and flashed a ‘thumbs up’ as he arrived at the venue

Last month, it was reported that Cowell walks more than 40 miles a week to aid in his recovery.  

Of his new fitness regime, a source told MailOnline: ‘Simon said how he hasn’t worn trainers as much as this in 20 years.

‘He feels fitter than ever before and is keeping to a normal routine rather than being on the phone until into the early hours of the morning.’  

Sofia Vergara looked summery in a white keyhole knit blouse, paired with frayed cropped skinny jeans

Heidi Klum got attention in a bright lime green blazer, cropped pale blue jeans and white stiletto ankle boots

Cowell’s fellow judges Sofia Vergara and Heidi Klum put on a stylish show as they arrived for the taping  

Quirky: Judge Howie Mandel arrived in a photo collage printed suit with all the AGT judges on it

Quirky: Judge Howie Mandel arrived in a photo collage printed suit with all the AGT judges on it

Coming soon: America's Got Talent, hosted by Terry Crews, is scheduled to return to NBC on June 1

Coming soon: America’s Got Talent, hosted by Terry Crews, is scheduled to return to NBC on June 1