Size down!
I'm normally an xl, but i bought a l since so many said it was big and boxy. the l fit great. it's tailored to the body, but not tight-fitting, just as shown on the model.

the detailing at the shoulders is heavy, compared to the light knit of the fabric of this tee. so, it pulls the neckline forward a bit. 

i bought the red and wow! it's a bright, fireengine red that's just stunning. it looks lighter in the photo. it arrived all squished up in a little tiny roll so it was really wrinkled.