Cody Simpson competed in the Australian National Championships in Queensland on Saturday. 

The singer-turned-athlete has had a less than stellar run at the competition - coming in fifth in the 50 metre heat. 

Afterwards, the 24-year-old looked to be in good spirits while leaving the Gold Coast Aquatic Centre alongside his American model girlfriend Marloes Stevens, 28.  

Cody was also supported by his singer sister Alli Simpson, 22, who had her real estate agent boyfriend Mitchell Lambert on her arm. 

Marloes, wearing a denim jacket and graphic sweater, beamed as she walked alongside Cody, who was rugged up in a white hoodie and black track pants. 

Cody managed to shoot a smile at waiting photographers despite earlier appearing discouraged by his result in the pool. 

Alli was also taking it all in her stride, smiling widely after watching her brother perform in the pool. 

She held onto the arm of her beau, who had worn a blue suit to the sporting venue, while Alli dressed down in blue jeans and a black sweater. 

Earlier, Cody's disappointment was written all over his face after he left the pool following the race. 

On Friday, according to the star failed to show up to the competition, which is considered a forerunner to the Olympic trials in Adelaide in June. 

Despite being listed to swim in the 100m butterfly, the news site he 'chose not to compete in the second heat.' 

Taking the setbacks in his stride, Cody told he was eyeing a slot in the Paris Olympics.     

'Paris 2024 has always be my goal and my dream and I have taken the approach that anything before that is a bonus,' he said. 

Despite having an incredibly successful music career that saw him discovered on YouTube and signed by an American record label in 2010 at the age of 13, Cody says his childhood Olympic dreams are now bigger. 

He added: 'The way things have been progressing it's really promising. It's really nice to know that I am well ahead of the schedule that I was originally working to.'

Prior to flying into Gold Coast, Cody and Marloes, who have been dating since December 2020, completed a mandatory 14-day quarantine in Howard Springs, Darwin.