Body vs shoulders and arms.
The body of the sweater is much smaller than the shoulders and arms. I didn't notice it in the picture until I tried it on and also looked at the picture again. If I went up a size, then the body would fit better, but the shoulders and arms would be way too big. Notice in the picture how the sweater is not buttoned. If it was, then the fit would be off with the shoulders and arms. This must have been intentional. Many people don't button a sweater. Of course, there is a way for both areas to fit perfectly, even with exaggerating one. I should have ordered a larger size, if there was one. I do like my ice cream.