Kyle shared a first look at his newborn son on the Kyle and Jackie O Instagram account on August 14th, three days after his birth.
In the intimate family snap, Mum and Dad are beaming from ear to ear, with tears of happiness springing from their eyes.
And from the looks of things, this photo was taken shortly after birth, with mum and dad still in their hospital hair nets and gowns for what looks to be a c-section operating room.
On August 16th, another precious picture was shared on the Kyle and Jackie O Instagram account where Kyle is seen gazing contently at his newborn son.
Isn't this just the cutest?
Nothing to see here, just a daddy and baby bear snuggling up together!
Just LOOK at this cutie!
In December 2022, Otto went on his first flight at the tender age of just fourth months old. So cute!
Kyle and Otto soaked up the sun before the radio host had to return from his summer vacation and get back to work at KISS FM.
Kyle and Tegan's multimillion-dollar wedding had numerous celebrities and high-profile guests in attendance.
But it was baby Otto, dummy in mouth, who stole the show!
We are seeing double!
Little Otto looks so much like his dad.
Kyle's co-host (and the godmother to Otto), Jackie O, shared this sweet snap of her teenage daughter Kitty alongside baby Otto aka her new best friend.
WATCH NOW: Otto visits Kyle Sandilands in the KISS FM studio. Article continues after video.
Just two months after Otto was welcomed into the world, Kyle revealed on his radio talk show that the couple was already thinking of expanding their family.
"We did talk about another one, possibly we started talking about that on the weekend," he said on his breakfast show.
However, Kyle seemed to be the voice of reason between the couple as he reminded Tegan that just because Otto was "easy" doesn't mean the second child will be.
That being said, who knows what the future will hold for this happy family of three!
To celebrate his son's first birthday, Kyle took to the airwaves to reveal that he would be running a "Yeah the Toys" blitz.
"Instead of giving him the gifts, if you guys have children, get your children to ring up and ask me for whatever toys they desire and we'll just buy it," Kyle said the day before on the Kyle and Jackie O show.
The accompanying video was of Otto practising his soccer skills with the help of mum, with soccer superstar Tim Cahill live in the studio to provide some expert commentary.
WATCH NOW: Otto shows off his soccer skills and Kyle reveals how he will be celebrating his son's first birthday. Article continues after video.
In the days leading up to Otto's first birthday, Kyle revealed that there were over 50 people attending his party and that he was working closely with a party planner to bring together the jaw dropping $25,000 event.
In September, Kyle took to the airwaves to reveal his son's first words.
"Otto's walking now. He says Dada only, much to his mum's horror because every time I walk into the room he says 'Dada', but he says no other words," the father of one revealed to his co-host Jackie O.
Whilst Jackie was quick to tell Kyle that Otto's first word was likely due to the letter 'd' being easier to pronunciate for young children, Kyle shut her down.
"They say who they love the most, I think, first," he joked.
One month later, doting dad Kyle shared new photos of his handsome young man on Facebook, simply writing that he was "growing up so fast" - and we agree!
Only a few weeks prior his shock jock father revealed that he was "jealous" of his toddler's wealth.
"My child is already a millionaire, he's already got a million dollars in his bank," Kyle shared live on air.
"I'm jealous of me own kid," he added with a laugh."
He may still be young, but proud parents Kyle and Tegan got well and truly into the spooky spirit for Otto's first Halloween, dressing him up in a ghoulishly cute ghost costume.
"☀️ It's a hot one today, Sydney! Don't forget to stay sun-safe and slip-slap slop! 😎," Kyle captioned this adorable snap from December 2023.
Merry Christmas from the Sandilands!
The family shared this sweet festive photo with Santa to celebrate their first silly season as a family of three.
In January 2024, Kyle shared new photos with his son and family... fans reacted strongly to the new photos with one commenting that it brought them to "tears."
"Kyle... you’re awesome. You bring tears when I see this side of you," they commented.
Another fan wrote, "You are such a gorgeous daddy Kyle. Otto’s the cutest."
“You big softie! I’m really happy for you and the family," another fan penned.
Sweet and snuggled up!
Otto hangs on tight to mum Teegan in this adorable sleep snap of the Sandilands family starting their day.