Not sure about that sizing chart. I faithfully followed the measurement directions and ordered accordingly but the jumpsuit was at least two sizes too big. Good for my ego but rather disappointing, especially since the smaller sizes were sold out by the time I received my order. Took a few emails to get the return form but it very quick to process my return. Unfortunately, as an international customer, the whole process was rather expensive. £20 for shipping is a bit high (translates to an additional $35) plus I had to pay to ship the item back which was another $35. I spent $70 but have nothing to show for it. As much as I like the clothes, I'm a little gun shy about ordering again.