I've ordered all my Jantzen shirts with the tightest fit on their order form. Be aware that if you do so, it will be very snug against the body. Following their measurement recommendations, I've had to let out 1/2" in the chest and waist and 3/4" in the hip from my first order. They make the hip especially tight. Just an fyi to help you in your order. I have my sizing down to my preference by the third order.