And then people who are medium get screwed. My sister sent me some clothing because we are the same size generally so she can buy most stuff off the rack and it will fit me. Well, not last time. She picked out a cute cream tank with snaps from Old Navy size M, because she assumed M will be longer because I am almost 6 foot. Nope, I swim in that stupid top, I have to wear another tank under it just so my boob doesn't pop out. I currently wearing a S tank from a cute store I go to, it fits perfectly, a bit loose but not falling off.