Ciara Maher's waist-length brown hair has grown uncut for at least six years.
But now the 14-year-old Howick College student intends to have it all shaved off in a fundraising gesture to help reduce New Zealand's internationally high rate of bowel cancer.
The cutting and shaving is scheduled for December 6, the birthday of her grandmother, Pauline Barclay, who died aged 52 - well before Ciara was born - of bowel cancer.
Ciara has been thinking of having her hair cut off for a couple of years. She initially thought of raising money for the Child Cancer Foundation, until she spoke to her neighbour, a cancer nurse.
"He said something more specific like ovarian cancer, so I thought I will do it for bowel cancer because my grandmother passed away from it before I was born," she said.