I am normally a US size 4 and ordered 3 dresses in a size medium since I heard that their dresses run small. The dresses were party dresses for vegas. When the dresses arrived, I tried them on and they appeared to fit perfectly. Yet when I wore them out, I noticed that the dresses would ride up and I would have to constantly keep pulling the dress down to avoid exposing myself. I am 5'6" and athletic yet these dresses were even short on me. The quality of the dresses were also poor.