I like my hoodie sweaters to be loose so I can wear bulky tops under if I want, so I ordered 3x. I wear a women's size 16 or often an XXL. I maybe could have been just as good (or better) with a size 2x, but this way I can wear it over bulkier tops in the winter. I like that it's lighter weight than sweatshirt material, and more like wearing a sweater. Comfy.