I wish they had an extra large for me, but once I got my head in I was fine. lol

The dress is of a thiner materail but extremely hot. You'll love the look but size up. As long as you size up or two depending on your body status you will have no problem getting your head through the whole. I sized up two sizes and it was perfect. Downfall is it generates body heat very quickly so a evening event in this dress will do the trick.