I was probably a 2a until the summer before 9th grade, I really don't remember when it curled. I recall going for my annual before school starts haircut and there were curls everywhere! Since I lived in the pool that summer, I guess it curled and I never noticed.
http://public.fotki.com/BrewCrewGrl/

The bond with a true dog is as lasting as the ties of this earth can ever be- Konrad Lorenz