I believe this fits a bit tighter than other garments out there in the world. For reference, I'm a 36A with a 28" waist and broad shoulders, and the Large *just* fits. It is stretchy, but if your bustline is larger than mine (and whose isn't?), it will be very close fitting.Great pinup/vintage-looking sweater (it's not super long like everything is now). Very soft, thin and stretchy material. I got the Lavender and the Tomato; the colors are beautiful, and they are a fantastic price.See full review