As far as I know, everything that is listed in the first post of this topic by suraschier is absolutely necessary.
And yes, ChanieE (I only read page 1) – unmarried women must indeed keep their hair short, in the way all (Israeli) chareidim of decent level keep it. Go ask some Beis Yaakov girls anywhere around the chareidi areas of Jerusalem on how to keep your hair: they’ll tell you.
Once again: suraschier is completely right. These things are, summarized in a few lines, the absolute and fundamental basic principles of the outward appearance of a Jewish woman.