Underworks Sizing Help
So I was planning on ordering my first binder today from underworks, but I'm a bit confused on what size I want. I want to order the 997 (ultimate chest binder tank), and I'm not sure if I want to get a small or an extra-small. I took both measurements (under and on my breasts), and when I averaged the two measurements I ended up with a 31 (which means I should order an extra-small). I am a c cup, so I'm a bit worried that the xs will be too tight, but I also don't know if the small will bind me properly. What do you guys think?