I got this because it looked simple and I like what the ad said about hiding muffin tops and that puffinesss under the arms.  BUT.. I am 5'7" approx 170 lbs, waist 30-32 inches.  This thing pinched under my arms.  And I got a med but it was not as tight as I had hoped.  In all honesty, it will sit at the top of my closet with the rest of the ill-fitting shape wear I have wasted money on.  I didn't bother to return it because 1) usually you may not return intimates 2) I was not interested in all the trouble.  Perhaps one day I wiill invest that effort in working (so I don't need shapewear) or that money in shapewaer that might work.  It was not HORRIBLE, but not at all what I like, expected, or can use.