After checking the size chart (pictured as a photo at left side of product listing) I got an XL (usually I wear 38B). The modal fabric is soft and silky, and the fit is forgiving if you aren't slim. The padded bra cups are sewn into a shelf style inner layer. The cups each are fairly small and narrow, and sewn together at the center, so they make a 38 person look like a bit like a 34 from the front. Not a deal breaker for me, since am using this under a thin but roomy blouse rather than a snug knit. I suspect they are using the same bra cups for all sizes, and the effect at a larger size is not ideal.