I sized up to a LARGE in this sweater for a very oversized fit. I was going for a Free People look. The fit on the model is how the sweater will look on you if you go with your normal size. I am 5'6" and have a long torso, thats why went up to a large. However a medium would have worked as well but | was really concerned about the length. ANYWAYS- go up ONE SIZE for a fit like mine if you don't have a long torso. Go up 2 sizes if you DO have a long torso or are taller than me if you want the fit like mine. #LTKunder100