If you want this to fit like on the model, you'll have to look like the model.  If you have boobs, the line probably won't go down completely under your breasts unless you order a really large size.  I ordered my usual size- medium, and it was too big around the waist.  It's true that this runs large but not LONG in the sleeve/torso area, so the seam might cut you off where it isn't supposed to.  It's cute but, size down.