I needed a classy, long, feminine, dress for our son's winter wedding and did NOT want to wear the "traditional" mother's lace with over-vest ensemble. This was the perfect dress for the occasion and I received many compliments. I am 5' 10", 140 lbs, and a medium was a great fit for me.
(It almost touched the floor.) I really liked the weight and drape of the fabric. There was no chance of anything showing through and it lends to the flattering look.