Braiding.
Braiding seems to be the latest thing when it comes to teenage hair. Such a simple old fashioned style is now cropping up on pop stars tresses and tv starlets in various forms.
French plaiting is something I used to try and try to do on Sians hair when she was a little girl with limited success. Within a couple of minutes of watching me do one on her sister she turned away and with nimble fingers re-created the style over and over on any of her friends with hair long enough to let her.
Now that she has mastered the basic plait she is you-tubing variations and thinking of more and more adventurous and modern twists to an old fashioned style. I love it!