I ordered the medium based on the size chart provided by the seller. I am 5'2", with a 39" bustline and a 32" waist. The Medium was comfortably loose throughout. The shoulders and sleeves are a little on the big side, which feels like I'm wearing a baggy, lightweight sweatshirt. I'm not a huge fan of the banded bottom hem, which is slightly snug against my hips, so I imagine it would not be a flattering fit with a round middle.