Paper thin material and runs very very small.  I'm 5'8 155 and normally wear about an 8 sometimes a 6.  I ordered the XXL and it is tight from chest to booty.  I'm broad shouldered but only a 34B chest and a small waist.  The only place there is room on me is the waist.  I will keep it because it is so hard to find a cute dress like this...But I will definitely wear a nude long cami under it and probably have to drop about 5 lb. by July 4th to wear it and be comfortable.