I am 5'6", 125 pounds with a natural waist of 27 inches, and I'm trying to get my waist down to 24 inches, so I ordered the Small/24", which supposedly fits a natural waist of 26-27 inches. Even with the laces tightened all the way, to the point where the two pieces of the corset are overlapping in the back, it only brought my waist down to 25 inches.

So I returned it and got the extra small, which works, but now I'm noticing that it's a little short, cutting into my love handles a little and giving me a bit of a muffin top, and not quite making it to under my breasts. Again, I am 5'6", but I don't think I have a particularly long torso. So I'm going to give the longer-looking style a try and see how that goes!

Otherwise, it seems very well made and I like that it is mesh!

*Update* Got the longer style, it's perfect! So it's a little frustrating that the sizing is so misleading, but it's a great product, so just order a size down from what the numbers indicate you should!