SIZING INSTRUCTIONS: We measure all of our shirts while they are laying FLAT on the outside of the garment. We list measurements as follows in the illustration : A Armpit to Armpit = double that number and you should get the approximate chest. For bust sizes I recommend trying on a shirt. Sakk shirts are cut over-sized. B Shoulder to Shoulder = shoulder are dropped so this does not matter. The Length D is measured on the back of the shirt in the center from the neckline on the seam to the bottom seam of the garment. My Back length is longer then front. My fit model is a full figured/ regular body type human. Unlike the imported clothing which comes to the USA which have U thinking U R bigger then what U are due 2 their odd sizing. With that in mind, U may be one to two sizes smaller then what you have been wearing. Please email, sakk2001@aol.com, or sakkdesigns@yahoo.com, or call (727) 551-9401, and I will assist you in obtaining your true size. I will come as close to your STANDARD size. When it comes down to buying clothes SIZE MATTERS!! Know your measurements before you order to avoid disappointment!