The 28-year-old and her husband, Carlton football star Marc Murphy, welcomed the adorable baby boy into the world on Sunday.
Sharing the joyous news to Instagram on Thursday, the new parents revealed they were ‘so in love’ with son Max Murphy.
Unlike many other high-profile couples, the pair chose not to share the news of the birth with a hospital snap.
Instead, Jessie and Marc shared separate pictures of the precious newborn on their social media accounts.
The fashion blogger broke the news, writing: ‘Welcome to the world Max Murphy, born 14.01.18. @marcmurphy3 and I are so in love with you.’
In Jessie’s photo, Max still had his hospital bracelet and anklet on as he looked snug in blue denim-look overalls, a white shirt, beanie and booties.
Meanwhile, proud father Marc followed with his own unique snap, captioning it, in part: ‘Welcome to the world Max Murphy 14.01.18 The best day of our lives.’
Max opened his eyes for this shot, yawning for the camera in an adorable lion-print white jumper.
Father Marc also gave a shout-out to his model wife in the upload: ‘So proud of my beautiful wife Jessie!’
The posts collectively racked up more than 8500 likes by their close friends and fans in the first 30 minutes of posting.
Jessie’s blogger pal Krystal Forscutt commented, ‘Congrats!!! He is gorgeous’, to which Jessie responded with a love-heart emoji.
Another friend, Alexandra Lawson, commented with love-hearts, to which Jessie replied by telling her little Max was on a blanket gifted by her.
Fellow WAG Bec Judd also wished the couple well, writing: ‘Just magic. Welcome little Max.’ Jessie soon responded, claiming the bub was ‘waiting for cuddles.’
Andy Lee’s girlfriend Rebecca Harding was also excited by the news and wrote: ‘Congrats gorgeous!! Xx.’
Jessie, who married Carlton Football captain Marc in a lavish ceremony in December 2016, was known for regularly updating her 212k fans with baby bump photos.
The last snap on her account flaunting her burgeoning belly featured the model and socialite in an extravagant semi-sheer gown.
She captioned the shot, posted on January 7: ‘Before 2 becomes 3.’
In July, Jessie and Marc revealed they were expecting their first child together.
Jessie announced the news on Instagram: ‘IT’S A BOY!’ We are thrilled to be welcoming Baby Murphy into the world in January 2018.’
At the time, the blonde bombshell gushed to The Herald Sun about Marc, confessing: ‘I can’t wait to see him as a father… He (Marc) is going to be amazing. It is exciting to be starting our own little family and to move on to that new chapter and journey.’
‘It is exciting to be starting our own little family’: The blonde model and socialite previously gushed over husband Marc becoming a father and expressed her excitement over becoming a family unit with their little one
Jessie and Marc celebrated their first wedding anniversary in December, after tying the knot in a lavish Melbourne wedding in 2016.
The ceremony was held at a ritzy rooftop venue, Luminare, in South Melbourne which offers sweeping views of Melbourne’s city.
Jessie stunned in a custom white OGLIA-LORO haute couture gown featuring ‘200 metres of tulle’, while her wedding band was a gleaming diamond sparkler from Anton Jewellery.
In a surprise twist, the happy couple skipped romantic ballads and chose Jay Z and Kanye West’s hip-hop hit ‘N***as in Paris’ as their entrance song.