It is not often that I am pleasantly surprised but this time, I am.
I am 5'6, 155lbs with a large bust but smaller waist.
This $39 dress is surprisingly flattering. The material is hard to describe, maybe spandex with a satiny overlay? It is stretchy and conforms to the curves of your body without being obscene or uncomfortable. As other buyers stated, it isn't very forgiving when it comes to tummy bulge or other lumps and bumps but it is still a flattering fit. I am 5'6 and found the length on the size Large is perfect to wear with heels.
It certainly isn't the most well made expensive dress on planet Earth but for $39- I say this dress is a decent buy. I will post a pic after the event we are attending.