As they wriggle, laugh and sleep in their fathers' arms, these three little girls are clearly happy and healthy babies.
But all have overcome serious medical problems to get where they are today, making Father's Day an even sweeter celebration for their families.
Walter Bonnet and Lora Pomare are still marvelling at their eight-week-old miracle Sophie.
Twelve months ago Mr Bonnet was diagnosed with prostate cancer, aged just 37, and told his chances of having children were "near on impossible". Two weeks later, Ms Pomare was pregnant.
"It changes your whole perspective on life," he said. "Lora has been brilliant and Sophie is a happy baby."
After undergoing hormone therapy and a prostatectomy, he has been cleared of cancer and has set up the Younger Men's Prostate Cancer Support Group.
Simon and Michelle Carey's 18-month-old daughter Olivia is now playful and happy, a far cry from the first 10 weeks of her life in the neonatal intensive care unit at King Edward Memorial Hospital.
Mrs Carey's waters broke at 24 weeks and she spent a month in hospital before Olivia was delivered at 28 weeks - and whisked away by doctors.
"It was so surreal, watching this team of people working on this tiny baby - she only weighed 1.115kg," Mr Carey said.
But their most terrifying moment came a month later when Olivia stopped breathing after developing an infection.
Doctors prepared the couple for the worst but their little fighter responded to antibiotics and continued to improve.
"Simon was really supportive and very strong, he grounded me," Mrs Carey said.
As the Careys were praying for their girl, Daniel and Rachael Howe were watching closely over their own daughter Olivia.She was resuscitated at birth and underwent surgery for a blocked bowel. She spent five weeks in hospital but is now thriving. "It was stressful, seeing her struggle and crying," Mr Howe said. "But look at her now, she's zooming along."