>>281531252 (OP)
Long. Especially when it's long enough to reach the top of her butt.
The way it flows with movement or cascades down her body, accentuating and concealing in turn adds to the eroticism.
>>281531252 (OP)
Depends on a lot of factors. Face shape and hair color matter, if she wears glasses or not, her clothing style, her height, if her boobs are big or not. Big tiddy megane blondes in ribbed sweaters are the best.