There was an Error with sizing up this dress and they fit too small. The smaller sizes fit pretty true to size but The bigger sizes fit extremely small.XS (fits like XS)S (fits like S)M (fits like S/M)L (fits like M)XL (fits like L)1X (fits like L/XL)2X (fits like XL/1X(3X (fits like 1X)4X (fits like 2X)This dress may appear to have a collar and belt but this is actually just a nifty design. No need to fasten your belt or adjust your collar when wearing this. It is already fixed. Stretchy, comfy viscose that pulls right over your head. And are these commas, 6’s, or raindrops? Not sure. This is a copy of a vintage design! Done by both Mr. Mort and Betsy Johnson DETAILS:- Dress has about 8" of comfortable give and stretch-100% VISCOSE -Viscose is a silky luxurious thread that is technically dry clean only but hand washing is a safe bet too. If you are feeling dangerous you can wash it on gentle in cold water and hang dry and that can work as well. Do not machine dry. Lay it flat on a towel and shape it to original shape and let dry. I did a test with one of these dresses where I machine washed it on hot and even machine dried it and it actually came out fine but it did shrink down a whole size.