I’ve bought these bras several times in the past 8 years, going down in sizes as I’ve lost over 100 pounds in the last 3 years. I go to Wacoal’s website to determine what size to order, it has a tool that calculates what size you should order based on a couple of measurements and I always do the measurements myself and only messed up last time because I was not yet recovered from a shoulder surgery and had some difficulty moving my arm to measure properly. But Amazon has a really great program called “Try Before You Buy” so I wasn’t charged for the first bras I ordered recently and was able to exchange them and try the size that was recommended when I measured myself correctly. The second ones fit perfectly and I had 7 days to decide if I wanted to keep, return or exchange them again, but I knew immediately that they were the ones for me and I chose to keep them immediately and then I was charged. These bras are lightly padded so nothing shows through a shirt and they are very comfortable. I never cared for wearing bras until I tried this brand and style.