The couple, who fell in love on The Bachelor Australia in 2015 confirmed their wonderful news in a private Facebook group called 28 by Sam Wood Member Community.
Sam apologised for lack of posting, saying his phone has fallen in the toilet but shared a beautiful clip of the couples new daughter, Willow Wendy Wood.
"I have fallen in love with most perfect little girl and fallen further in love the most beautiful Mum."
"I also haven't been able to stop crying."
A few hours later, the proud papa uploaded a beautiful black and white snap of Willow sleeping peacefully in his arms.
"Willow Wendy Wood you make our hearts explode. Mumma you were amazing and I love you more than ever. Eve, you look so natural holding your little sister. Dad - stop crying Willow you are simply perfect," the 205 Bachelor penned.
Sitting on their rightful throne as the king and queen of reality TV romances, Snezana and Sam first shared that they were expecting a child together on Mother's Day back in May.
Snez, already the proud mum to her daughter 12-year-old Eve, posted a stunning photo of them, penning, "We're so excited to be able to let the world know that our little family of 3 is soon to become 4."
"@samjameswood you're an incredible father ❤"
Sam left the sentimental post to his future wife, opting to go down a funnier route.
The trainer uploaded a stunning yet hilarious photo of Snez- with her gorgeous baby bump on full display. The very pregnant mum was rocking a white tee which happened to be smothered with pasta, as her partner laughed at her.
"Snez ........... a) has just eaten a bowl of pasta bigger than her head b) can't do up her pants c) is having a BABY!!! d) all of the above #theanswerisd #happymothersday #soexcited," Sam penned.
The new dad has already been fast-tracked into fatherhood with Eve.
Overjoyed by his expanding family, the Woodshed trainer has admitted, "Eve is going to make the best big sister!"
Just a few hours after announcing they were going to become parents, Sam and Snez gave Australia another reason to cheer, revealing they were having a girl.
"Happiness does not do it justice. What better day to announce that it will soon be me and my 3 girls! #BetterBuildAManCave," Sam revealed.
Ever since, all of Australia has become ridiculously clucky with the pair sharing the most stunning maternity moments from Snez's second pregnancy.
The duo prepared for their new bundle of joy by taking a well-deserved "babymoon" to Hawaii.
And it was during this trip that many fans thought that Sam and Snez secretly tied the knot.
At the time, the personal trainer sent the Bachie community into meltdown after posting a snap of him and his baby mama in a very passionate embrace and captioning it, "You may now kiss the..."
Hours later, the gym trainer posted a video this time showing the pair in bed relaxing.
"Snez's two favourite words in the English language," Sam joked before showing his maybe-wife eating a bowl of dessert thanks to some "room service."
While we do know a wedding is on the way, Snez did admit to NW that prior to meeting Sam, she never really considered having more kids.
"I actually wasn’t planning on having any more. I was happy with the beautiful little girl that I have… But then I met Sam and things changed."
"I don’t know if it made me feel cluckier, but it was good to see his gentle side and how great he is with kids, which does make you think, 'Oh, it would be nice to see what he’s like with a baby.'"
Adding, "I mean, Eve is basically grown, so he hasn’t done the whole nappy-changing and everything! So it will be great to see what he’s like in that department."
As for Sam, he's always wanted to be a dad... But in his words: "This is a different kettle of fish!"
"It’ll be a whole new ball game," he told NW.
"I’ve been told about a million times since we announced it, 'Strap yourself in – you think just because you’ve got a great relationship with Eve, you’ve probably got a handle on this, but this is a different kettle of fish!'"
"And I understand where they’re coming from, ’cos a lot of my mates have young kids."
Snez isn't too concerned, regularly gushing on Instagram saying, "Sam you're an incredible father."
A huge congratulations! We couldn't be happier for you guys and can't wait to watch Australia's first-ever Bachie baby grow up!