Property tycoon Theo Onisforou’s 24-year-old son Angus is spending time with model Megan Blake Irwin

Fresh photos hint that a famous celebrity who resides overseas has been hanging out with an Aussie millionaire’s son.

Millionaire property tycoon Theo Onisforou’s 24-year-old son Angus is spending time with Aussie model Megan Blake Irwin.

The 32-year-old model, who is primarily based in America, was seen with the property heir in Sydney.

The younger Onisforou picked the model up from a Witchery event that Irwin was involved in to celebrate the annual launch of the fashion brand’s White Shirt campaign, which raises money for ovarian cancer research.

The pair kept it low-key, and Irwin was seen slipping into Onisforou’s swanky car. He was quite the gentleman and held open the door for the model as she made her getaway from Café Sydney in Sydney’s Circular Quay.

The pair seemed happy to see each other. Picture: MediaMode

She was looking casual but chic. Picture: MediaMode

The model kept it chic but fairly casual in jeans, a white shirt, and a pair of $2000 Saint Laurent stilettos, and she was all smiles as she left.

The 24-year-old also kept it casual in shorts and a plain white T-shirt that he paired with some runners as he chauffeured the model around Sydney.

The potential romance is slightly unexpected, although Sydney is small, so all the famous and super rich tend to know each other. Irwin does however spend most of her time overseas.

She's a very successful model. Picture: Instagram/MeganBlakeIrwin

Angus doesn’t even have any photos posted on Instagram. Picture: Christian Gilles

Irwin, of course, has quite a star-studded dating history. She’s been linked to a range of celebrities, from Kourtney Kardashian’s ex-partner Scott Disick to millionaire David Mimran, who was 22 years older than her.

The property heir is fairly private. He has 12,000 followers on Instagram but has posted no photos. He studied Law at the University of Technology in Sydney and is a polo player who is involved in cattle farming and auction houses.

She's dated a few celebs. Picture: Instagram/MeganBlakeIrwin

Theo Onisforou is a very successful business man. Picture: Christian Gilles

His father was previously Kerry Packer’s financial adviser but has become a property tycoon and is credited with reviving Paddington’s intersection into a flourishing retail spot.

In contrast, Irwin’s life is more public.

She has over 100,000 followers on Instagram, has posted over 1,000 times, and grew up in Adelaide.

The model, who has previously claimed one of her beauty secrets is drinking over a litre of water a day, opened up to the publication Beauticate about the challenges of living overseas.

While she stressed that she was grateful for her career and all the amazing people she gets to meet and work with, she said it was tough being away from loved ones.

“The downside of this life is definitely being away from my family, but that’s life, isn’t it? Highs and lows. Once you learn the balance and are more used to what to expect, it isn’t so bad after all,” she said.