And now – at last – the girl whose nickname is Rapunzel - is going to take the scissors to them.
Natasha Moraes de Andrade - who lives in an impoverished shanty town in Rio De Janeiro – is hoping to raise £2,000 to buy her family out of poverty by selling her locks for hair extensions.
She uses a whole pot of shampoo every week and washing her curly locks can take up to four hours, twice a week.
Brushing it afterwards can take another one and a half hours and she has to carry it around when she walks, and fold it onto her lap when she sits down.
Mother Catarina, 42, said the teen's mission to grow her hair super long started when Natasha was just a toddler.
Admirers told her never to cut her daughter's beautiful hair as it was so thick and long.
But now she and the girl's school are urging her girl to chop it off because it stops her from even taking part in PE lessons.
Her family have to turn their fans off when she's at home or she becomes trapped in the blades!
Do your children have super long hair?