Although welcoming a baby during lockdown came with its challenges, Hayes went on to say she was "bursting with love".
And she thanked Auckland Hospital maternity staff as well as her midwife for the safe arrival of baby Amaya.
She paid tribute to her partner Blaauw as well, who "changes endless nappies, never gives up trying to settle Amaya, all while keeping Marlow happy and looking after for me.
"I love you."
The newest edition to our family, Amaya Violet Blaauw, arrived last Friday 17.9.21 weighing 3.21kg. Where has the past...
Posted by Samantha Hayes on Thursday, September 23, 2021
Earlier this year, Hayes revealed she spent a "scary few days" in hospital after coming down with a mystery illness.
She shared a snap to her Instagram page letting her followers know she had been admitted to hospital on Sunday night with a "mystery infection and high fever".
"We thought our baby might be arriving a couple of months early too, but the wonderful team at Auckland Central Women's Health and Origins Obstetrics got to work and I'm now recovering," she shared.
"I can't thank them enough for looking after me and keeping our baby safe."