I tought it was when they have 16. A girl put her hair up and begins to wear long dresses`when she reached her 16...Until she had 16, she was dressed as a girl and her hair was down or in childish hairdoss. Of course, this was only when grown up women started to wear her hair up, for in other times, before the Victorian era, grown-up women and girls would wore their hair both , up or down. There were different hairdoss and girls and grown up ladies would wear their hear in the same styles without any difference of age.
RealAnastasia.