I followed the advice of several other reviewers and purchase one size up (large). I'm 5'3", weigh about 150 lbs. and usually wear a medium, regular 8 or a 10P. Also, my bra size is a 34DDD (34F). In this size, this dress fits just how I prefer--fitted, but not tight. The fabric is interesting and stretchy. It doesn't feel heavy, but since it is not a natural fiber, I am wondering how it'll feel wearing this in the summer. I will be indoors for the most part, so hoping that makes it a non-issue. As previously noted, it would be nice to have one additional hole in this belt, allowing it to be smaller. The belt is actually just far too long, but does have a loop to thread the extra length through.