Kris Smith, 41, and 28-year-old Sarah Boulzeris' brood just got a little bigger!
The happy couple took to Instagram on Friday to announce the arrival of their second child together, a beautiful baby girl named Frankie Elle Smith
"Yesterday 12.12.19 all of our Christmas wishes came true, we introduced our healthy baby girl Frankie Elle Smith into the world," Kris wrote.
"@thisisme.sb you were a complete rock as always, you amaze me everyday... thank you for another precious gift I love you beyond words."
The former rugby star also went on to thank the staff at the Royal Women's Hospital.
"Thank you so much for all your hard work," the proud new dad shared. "Not just for us but for everyone you help."
He went on to gush: "We're so in love The Smiths. #baby #girl #lovequotes #family"
New mum, Sarah also shared a beautiful image with the deliciously short and sweet sentiment: "Frankie Elle Smith ❤️ ... no words just lovev #illbeinmybubble"
In June this year, the couple announced they were expecting their second child together – just six months after their daughter Mila was born in December 2018.
Kris is also a father to son Ethan, eight, who he shares with his Dannii Minogue.
Both Kris and Sarah, who began dating in 2017, uploaded an ultrasound video to Instagram to reveal there was another baby on the way.
Throughout her pregnancy, Sarah has regularly posted images from her family life and shown off her growing baby bump.
WATCH: Kris Smith and Sarah Boulzeris share ultrasound video to announce second child. Story continues below...
Sarah is the founder of her own BUMPFIT prenatal and postpartum exercise program and has documented how she kept fit while pregnant.
In her final weeks of her pregnancy, Sarah posed at the gym for an Instagram image and detailed her health and fitness regimen in the caption.
"I'M READY TO POP 🎈 #38weekspregnant," she wrote, before revealing her exercises included " 2 x 20-30min light #BUMPFIT weight sessions a week, daily 40-60min morning walk, and10,000+ steps."
The personal trainer said she aims to drink 2 litres of water a day (but doesn't always hit the target) and doesn't drink any soft drinks or flavoured liquids.
Sarah added that she and Kris are currently three months into a caffeine detox and she drinks "zero coffee".
As for her diet, Sarah wrote: " I EAT whenever I want and whatever I want. I don't really crave fast foods or packaged junk! I prefer to create my own raw deserts, smoothies or salads, pastas + random chuck together dishes at home with fresh organic produce from our local markets."