I am normally a medium or a large in dresses, I bought a large and this fit like an extra small! I would recommend sizing up at least 2 sizes. I am 5'1, 150 lbs, big butt small chest.

had to return because it was so tight I’ll have to repurchase and size up to xl hopefully that fits so I won’t have to pay the 7.99 return fee again which I think is ridiculous. for reference I’m 166 lbs and 5’0.