For Sam Mac and his fiancée Rebecca James, the wait is finally over.
The beloved Sunrise weatherman has announced the arrival of the couple’s third child, introducing their newborn son with a heartfelt tribute to his growing family and the woman he says made it all possible.
“It’s a Boy!”
Sam shared the joyful news on Instagram, posting a touching family photo from hospital alongside Rebecca and their newborn son.
With obvious excitement, he wrote:
“It’s a boy! Welcome to the world.”
He also revealed the baby’s name—Miles Samuel McMillan—marking the newest addition to the McMillan family.
The photo showed the proud parents beaming as they cuddled little Miles, wrapped snugly in a beige patterned blanket.
A Heartfelt Tribute to Rebecca
As he introduced his son, Sam made sure to recognise Rebecca for everything she had been through.
“Bec was an absolute superstar. Again. She’s recovering well. What a woman.”
The heartfelt message reflected the couple’s gratitude as they celebrated another life-changing milestone together.
Three Children Under Four
With Miles’ arrival, Sam and Rebecca are now parents to three children under the age of four.
The newest little brother will soon be joining big sisters Margot and Mabel, something Sam admitted has left him both excited and slightly overwhelmed.
“So excited for this little man to meet his big sisters Margot & Mabel. We now have 3 under 4. Wowsers.”
A Pregnancy Filled With Joy
The announcement comes just months after Sam revealed Rebecca was expecting their third baby.
The couple shared a series of family photographs featuring daughters Margot and Mabel, while Rebecca proudly showed off her growing baby bump.
One sweet image captured Sam kissing Rebecca’s stomach while holding ultrasound photos, confirming another exciting chapter was on the way.
At the time, he revealed baby number three was expected to arrive in July.
The Funniest Challenge Before the Big Announcement
While announcing the pregnancy, Sam joked that the hardest part wasn’t keeping the secret—it was convincing toddler Margot to pose for the family photos.
He hilariously revealed the negotiations included a cookie, a bubble machine and even the promise of a pony.
“The negotiations involved to get a three-year-old to appear in a photo… Wowsers!”
Despite the challenge, the family captured the special moment together before sharing the happy news with Australia.
An Outpouring of Love
The announcement quickly attracted thousands of congratulatory messages from friends, colleagues and fans.
Among those celebrating the new arrival were Dr Chris Brown, Olympic champion Liesel Jones, veteran journalist Leigh Sales, and children’s entertainment group The Wiggles, all sending their best wishes to the growing family.
A New Adventure Begins
For Sam and Rebecca, welcoming Miles Samuel McMillan marks the beginning of another exciting chapter.
With three young children now filling their home with even more laughter—and no doubt a little more chaos—the couple are embracing family life once again, as big sisters Margot and Mabel prepare to meet the newest little member of their team.
