I'm 5'1", 123lbs, 34C and ordered the Medium, as I wanted it to just graze my curves. The fit is exactly what I wanted. A small would have fit like a glove but been much more provocative, and I wanted to be able to wear this in a professional setting as well as for going out. It's been very versatile and I've gotten a lot of compliments on it. Definitely channeling that Wednesday Addams all grown up vibe, but not at all cheesy or costumey. The fabric is thick and smooth with a polished matte finish and just enough stretch to move in comfortably. The collar detail is simply and beautifully done, it looks very elegant and frames my face perfectly, really highlighting my choice of earrings. Overall this dress looks and feels much more expensive than it is. I'm short, so it comes a little below my knees, which I wanted, again because I'm wearing it at work as often as not. I also generally prefer a sultrier pencil skirt fit. On someone 5'6" or taller it might just come to the knee. The sleeves end exactly at my wrists and the cuff detail does not stick out. Again, someone longer-limbed than me might find they stop a little before the wrist bone, but it would still be a very elegant look.