Nadia and Jimmy have two sons together, one-year-old Henley and three-year-old Aston.
And while the recently split couple share custody of their children, Jimmy wasn't in attendance at his son's birthday party.
Photos and videos were shared to Instagram by the 34-year-old and her friends and family, which showed the party in full swing.
Details including an elaborate balloon archway, a giant antipasto table and a jungle-themed cake.
Nadia shared sweet details from the day with her Instagram fans.
"Little man slept through most of his birthday but had a great day when he was up and he loved all the balloons," she posted.
Nadia's friends responded with birthday wishes and congratulated the mum-of-two on pulling together the party.
"Gorgeous day @nadiabartel and you have a beautiful family all around you.
Those amazing boys of yours are so lucky to have you," wrote Bec Judd.
"Such a little spunk! Well done super mum!" said AFL WAG Georgia Mackie.
"👏🏼🌈🌈🌈" Kyly Clarke posted.
Nadia and Jimmy, who were married in February 2014, announced their breakup in August.
Nadia spoke out about her marriage breakdown last month, ahead of her appearance on Channel Seven's The All New Monty: Ladies Night.
"It's been a tough time personally for me recently, it's just so painful," she said.
Jimmy has since moved on with socialite Lauren Mand, with the couple confirming their relationship with an outing in Melbourne earlier this month.
