IRIS Wilson can't believe she's 100, and neither can many of the staff at Blue Care's Nowlanvil aged care home.
The spritely and sharp centenarian celebrated her birthday at a surprise party on Monday, during which a room of the Flinders View facility was renamed the Iris Wilson Recreation Room.
Diversional therapist Vae Mulivai said Mrs Wilson was Nowlanvil's oldest and longest-serving resident and highly deserving of the honour.
"Iris has been here since 1982 and she's a big inspiration to us," Ms Mulivai said.
"Her murals and painting classes have added colour to many people's lives here at Nowlanvil."
Mrs Wilson put her sharp wit and great memory down to embracing her much-loved creative hobbies, including doll-making and painting.
She has spent much of her 30 years at Nowlanvil painting landscapes on canvas as well as the facility's walls, before her vision blurred eight months ago.
"I've been drawing since my father, who was also an artist, taught me when I was six and I also love painting," Mrs Wilson said.
"I've written some books too, with stories from my childhood and life," she said.
Mrs Wilson said her vision loss was frustrating.
"I don't know what to do at the moment, but I have decided to just do what I can while I can," she said.
In past years, Mrs Wilson also hosted painting classes for the wider community.
"When I go to an organisation I don't just join it, I become a member and get very involved," Mrs Wilson laughed.
She is a proud mother of two sons, and has dozens of grandchildren and great-grandchildren.