My height and weight pu me smack dab in the size B.  I tried them on at home with the dress I was going to wear. The tummy part rolled down. I figured that wasn't optimal but it was still usable.  While I was out the panties caused so much static, I was embarassed to stand up.  I used some water in the restroom to reduce the static.  A couple of hrs into wearing them, the leg hem started rolling up my thighs, creating once again embarassing bulges.  Not sure if the sizing chart was wrong or what happened, but I sure won't be wearing these expensive underwear again.