My stats are: size 4/6, 5’6” tall, 34C, around 150lbs, and I’m very early in my pregnancy, so I wasn’t sure if the size S/M or L/XL would be best for me. I ordered both because I figured I could use the smaller one for the first half, larger one for the second half. I tried them both on when they arrived, and they’re awesome. Noticeably nicer than the cheap stuff I’ve purchased via Amazon in the past. These are incredibly soft, stretchy, comfortable. Impressive quality all around, and I think I’ll want to wear them daily. But I honestly can’t tell much of a difference between the two sizes. Maybe once my belly is larger the difference will be more noticeable?