Billionaire pub baron Justin Hemmes, 48, cosies up to his younger model girlfriend Madeline Holtznagel, 24, as couple are pictured together for the first time celebrating the Melbourne Cup at his Coogee restaurant

They've kept their romance under the radar for months. 

But billionaire pub baron Justin Hemmes, 48, has finally been pictured with his much-younger model girlfriend Madeline Holtznagel, 24, for the first time. 

The pair, who first sparked sparked romance rumours in August, were spotted celebrating the Melbourne Cup on Tuesday inside Justin's trendy restaurant Mimi's in Coogee, Sydney.  

Love at the Cup! Billionaire pub baron Justin Hemmes, 48, (left) and his much-younger model girlfriend Madeline Holtznagel, 24, (right) were pictured together as a couple for the first time on Tuesday as they celebrated Melbourne Cup at his restaurant in Coogee, Sydney

Love at the Cup! Billionaire pub baron Justin Hemmes, 48, (left) and his much-younger model girlfriend Madeline Holtznagel, 24, (right) were pictured together as a couple for the first time on Tuesday as they celebrated Melbourne Cup at his restaurant in Coogee, Sydney 

Looking very cosy as they sat together at a table with friends, the couple smiled as they toasted the race that stops the nation. 

Madeline, who is the younger sister of Australia's Next Top Model finalist Simone Holtznagel, looked chic in a sleeveless white dress with a cut-out midriff. 

She kept her accessories to a minimum, wearing a gold pendant necklace and matching hoop earrings. 

White on the mark! Madeline, who is the younger sister of Australia's Next Top Model finalist Simone Holtznagel, looked chic in a sleeveless white dress with a cut-out midriff

White on the mark! Madeline, who is the younger sister of Australia's Next Top Model finalist Simone Holtznagel, looked chic in a sleeveless white dress with a cut-out midriff 

The brunette wore her glossy locks in an elegant up-style and enhanced her striking facial features with a subtle makeup look. 

Meanwhile, Justin looked dapper in a black suit and tie. 

He swept his salt-and-pepper tresses back from his face, and completed the look with a small tie pin. 

Taking things slowly? The sighting comes days after Madeline lifted the lid on her relationship, admitting to The Sydney Morning Herald that she's yet to introduce Justin to her parents

Taking things slowly? The sighting comes days after Madeline lifted the lid on her relationship, admitting to The Sydney Morning Herald that she's yet to introduce Justin to her parents

The sighting comes days after Madeline lifted the lid on her relationship, admitting to The Sydney Morning Herald that she's yet to introduce Justin to her parents.  

'My parents and my sister Anna haven't met him yet, but [model sister] Simone has been introduced to him and really liked him,' she confessed. 

Madeline remained tight-lipped about how long she and Justin have been dating, but hinted it may be longer than initially reported.

'My parents and my sister Anna haven't met him yet': The sighting comes days after Madeline lifted the lid on her relationship, admitting to The Sydney Morning Herald that she's yet to introduce Justin to her parents

'My parents and my sister Anna haven't met him yet': The sighting comes days after Madeline lifted the lid on her relationship, admitting to The Sydney Morning Herald that she's yet to introduce Justin to her parents

'We have known each other for two years and met when I was modelling in Singapore,' Madeline added.

The couple sparked romance rumours after they were spotted partying together on his luxury jet Bombardier Challenger in August.

When asked about his new romance with the youthful stunner, a coy Justin said: 'We hang out a bit.'

True love! With her stunning features and her sizzling Instagram feed, it's no wonder Justin took a liking to Madeline

True love! With her stunning features and her sizzling Instagram feed, it's no wonder Justin took a liking to Madeline 

Despite his wealth and endless model companions, Justin told The Daily Telegraph that he 'doesn't think you need money to be happy'.

'For me, I think working hard, getting lots of exercise and keeping the mind active is what is most important,' he added.

Meanwhile, Madeline is rumoured to have recently moved into his $2.1 million Coogee apartment. 

Justin shares two children, Alexa, four, and Saachi, three, with his ex-partner Kate Fowler, 29, from whom he split in July 2018.  

Ex: Justin meanwhile shares his two children with his ex-partner Kate Fowler, 29, who he announced he had split from in July 2018. Both Pictured in May 2017

Ex: Justin meanwhile shares his two children with his ex-partner Kate Fowler, 29, who he announced he had split from in July 2018. Both Pictured in May 2017

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