Model Erin McNaught shows off her post-baby body as she steps out with newborn son in Queensland after welcoming her first child with boyfriend Stace Cadet

Erin McNaught welcomed her first child with her new boyfriend Stasi ‘Stace Cadet’ Kotaras last month.

And the Australian model stepped out in the Queensland suburb of Rosalie on Monday with her newborn son Obi.

The 42-year-old showed off her post-baby body in gray workout clothes, including a tank top and matching short shorts.

The Lycra ensemble hugged her fit and toned figure, and the new mom added a pair of sneakers and a cap to her look.

The stunner opted for a straight face and appeared to go makeup-free as she tucked her blonde hair under a cap.

She wheeled her son in a stroller as she walked down the street while taking a phone call and wearing designer sunglasses.

The record producer confirmed the news of the new arrival exclusively with Daily Mail Australia, revealing they were welcoming a baby boy into the world.

The couple revealed the unique name they gave their son – Obi Brooks Kotaras – and confirmed they brought him home from the hospital.

Photos obtained by Daily Mail showed Erin cuddling with her newborn son, while other photos showed Stasi beaming with pride as she cradled their baby.

“We are so in love with him, we can’t believe he’s finally here,” Stasi said.

“To be honest, we didn’t get much sleep when we got home from the hospital last night. Especially because we can’t take our eyes off him.’

Miss Universe star Erin also admitted it wasn’t an ‘easy’ pregnancy for her, while Stasi said they are ‘relieved’ at the safe arrival of their beloved baby boy.

The couple said they had kept quiet about a recent health crisis they suffered during the third trimester, but are now overjoyed to have welcomed Obi.

“It wasn’t the easiest pregnancy and there was a little bit of contact every now and then, but now that he is home with us, we quickly forget the difficult moments,” says Erin.

Erin already shares two children – sons Evander, seven, and Ennio, five – with her singer ex-husband Example, whose real name is Elliot John Gleave.

Stasi also took to Instagram to reveal their baby news, posting a black and white photo of Erin breastfeeding their newborn son at home.

In an accompanying caption he wrote: “Welcome home” sir. Obi Brooks Kotaras’. We can’t believe how perfect you are and we both feel so overwhelmed with pure joy.”

Erin had confirmed the news of her third pregnancy in an adorable Instagram post shared on Mother’s Day in Australia.

In a black and white mirror selfie, Erin debuted her baby bump in a black dress as her boyfriend Stasi gave her a kiss on the cheek.

“Mother’s Day this year was extra special for Stasi and me,” she wrote.

‘I feel like the luckiest duck in the world who experiences a small miracle along the way.’

The actress has been dating the Adelaide-based music producer for about a year after becoming Instagram official in October 2023.

Erin split from her ex-husband Example in October 2022, and the couple said at the time that their romance had come to a “natural end” after 11 years together.

They happily co-parent their two sons, with English star Example moving to Brisbane, Queensland with his British girlfriend Daisy Cox to be close to his family.

Daisy’s news comes as Example is also expecting a baby with his girlfriend Daisy, and the couple will welcome their first child together in January.

In September, the Kickstarts hitmaker and Daisy confirmed the news exclusively to Daily Mail Australia.

“We are so excited about our news and can’t wait to meet little bubba,” Daisy told Daily Mail Australia.

‘We’re now enjoying some relaxing time after Elliot’s busy summer of festivals – before all the madness and fun begins!’

In stunning photos, Daisy showed off her blossoming baby bump as she posed in a white bikini next to her loving partner on the beach.

She cradled her growing belly as Example lovingly stood behind her with his arms around her.

Example and Daisy have been dating for around 16 months, with the pair first announcing their romance five months after his split from Erin.

Insiders confirmed that Erin is happy with Example and Daisy’s baby news amid her own growing family.

“Elliot and Erin have been able to make their own rules within their new families and it’s a testament to everyone involved,” a source close to the couples said.

‘The couples have been able to keep each other informed and have very similar ideas about how the children should be raised and that has been important in keeping everyone happy – including the grandparents.’

“It may not have worked out in the first marriage, but everyone involved has found happiness in new adventures,” she added.