Simon Cowell shows off his mega white Hollywood smile as he arrives for America’s Got Talent quarterfinals

Simon Cowell showed off his Hollywood smile as he posed for photos ahead of America’s Got Talent quarterfinals on Tuesday. 

The music mogul, 64, appeared in high spirits ahead of the show, which saw fellow judge Heidi Klum, 51, hit the golden buzzer. 

As he posed on the red carpet, Simon took off his red tinted glasses which he uses to help avoid migraines. 

The former X Factor judge wore his signature style – a charcoal grey T-shirt and black trousers. 

Heidi and Sofia Vergara, 52, strutted down the red carpet in glamorous outfits. 

Simon looked ready for the show to begin as he posed for some photos ahead of filming

The music mogul, 64, appeared in high spirits ahead of the show, which saw fellow judge Heidi Klum , 51, hit the golden buzzer

The supermodel wowed in a black leather strapless dress, while Sofia commanded attention in a neon jumpsuit. 

On Tuesday’s show, Heidi pressed her Golden Buzzer for San Quentin prison nurse turned singer Dee Dee Simon.

Dee Dee, from Oakland, California, who worked as a nurse for 19 years in San Quentin, wowed the judges and the audience with her powerhouse voice.

Before she took the stage, Dee Dee shared how things had changed at the prison since she has been on the show.

‘When you drive through the gates, there’s a no hostage policy,’ Dee Dee said. ‘You know when you go in you may not get out. When the inmates saw I was on AGT, it was like the Super Bowl is happening.’

Dee Dee said her mother always told her to go after her dream. She sang Lose Control by Teddy Swims and even kicked her shoes off during her performance. 

‘You just went for it,’ Simon said. ‘I love the moment when you kicked your shoes off and it went up a gear.’

‘That was amazing,’ Sofia said. ‘You are a star tonight.’

The former X Factor judge wore his signature style – a charcoal grey T-shirt and black trousers

As he posed on the red carpet, Simon wore red tinted glasses which he uses to help avoid migraines

Heidi and Sofia Vergara, 52, strutted down the red carpet in glamorous outfits. The supermodel wowed in a black leather strapless dress, while Sofia stunned  in a neon jumpsuit

Heidi pressed down her Golden Buzzer for San Quentin prison nurse turned singer Dee Dee Simon

Dee Dee, from Oakland, California, who worked as a nurse for 19 years in San Quentin, wowed the judges and the audience with her powerhouse voice

‘The range, the tone in your voice,’ Heidi said. ‘You look so stunning tonight, but I feel like something is missing. Like a belt, a ring, something gold.’

Heidi then reached up and hit the Golden Buzzer as it was her turn this week to send an act straight to the finals.

Dee Dee jumped around in celebration as the golden confetti fell around her. Heidi ran to the stage and hugged her.

‘You are going to the finals,’ Terry said.