I absolutely love this dress!  I followed the seller's sizing chart and recommendations of other reviewers and the fit is perfect.  I am 5'8" and 180 lbs, and my bust/waist/hip measurements are 42 - 38 - 44 and the 2XL fits beautifully.  The fabric has good stretch to it and is heavy - good for fall/winter.  Very flattering!  I don't care for the skinny belt that came with it and am using a wide belt instead, as you'll see in the picture.
WARNING!  The care instructions do not have any advice on ironing, and I had seen other reviewers post that they ironed the dress, but when I used a cool iron it immediately left a scorch-like mark on the sleeve.  However, I contacted MUXXN and they immediately made it right and are sending me a new dress.  I am definitely a loyal MUXXN customer!