Parenthood is full of predictable platitudes, and perhaps one of the most over-used, yet true sayings is "it goes so fast."
And this week, it rang all too true for Cameron and Ali Daddo as they marked their son River's 21st birthday.
Former Home And Away star Cameron Daddo led the tributes for his son, who looks strikingly similar to him.
"Our son growing up before our eyes. Twenty-one years, today EarthDay...," Cameron began.
"Happy Birthday @riverdaddo thanks for cooking, the monkey bars, the laughter, the banter, the headaches, puppy love, the art, the smarts and ...one day GOLF????"
"I love you my son. 🙌🙌🙌😘 HBD... 21 in 21. 🌹❤️🎯✅ beautiful young man, beautiful mothering @alidaddo xx," the actor signed off the post, which was teamed with an album of beautiful photos from River's childhood.
Proud mum Ali also penned her own touching dedication alongside a black-and-white photo of River as a toddler, spliced with a current-day pic.
"21 today. River, you have given us so much joy. You have grown into such an intelligent, thoughtful, funny young man. I celebrate you today and everyday my son. Love you so. @riverdaddo Happy Birthday 🎊 😘," the model mused.
As River grows up, he's looking more and more like his famous father by the day. The 21-year-old shares many of his dad's features, including his striking eyes and broad smile.
The showbiz couple also share daughters Lotus, 24, and Bodhi, 14.
In 2017, the Daddo clan relocated from LA to Australia after living abroad for 25 years and Cameron says his kids handled the huge move with grace.
"We are very proud of our kids and how they have managed the difficult transition of adjusting to a new country without their friends or usual comforts," he explained to Medium at the time.
The family are now based in Sydney's Northern Beaches.
Cameron, who recently announced his latest role in the Aussie film How To Please a Woman, loves nothing more than spending quality time with his kids and isn't afraid to show off his daggy dance moves while filming a TikTok video with them.
"As far as work goes for me, if something clashes with a family thing like a birthday or a graduation, I've always been upfront with producers about what dates I need out so I can be present," the 56-year-old told WHO of juggling his career and his kids.
He added: "Sometimes I've got to be away on location and it's hard for everyone, but we just try and do our best to be present when we can't be [physically] present – so if you're on the phone, you're available to them, even if you can't be there physically."