I am 5'6" and 135 pounds. I wear a size 4 jeans, 4/6 in dresses, and small/medium shirts. I ordered a S and am on the smallest size hooks. It is holding me in but not compressing too hard. I wish there was a XS for further compression; I would order that one too.

This is more of a shapewear than a corset. It would be best for casual wear, or for wearing under dresses or tight clothing to keep a smooth, flat tummy.

There is plenty of space for the breasts; it gives them a lift without shoving them up and making them look weird or unnatural. I have had that problem with other waist trainers but this one is much better.

The fabric is not very thick, so again it is not very compressing. It is breathable, making it good to wear under regular daily wear, as opposed to waist trainers that create a "sauna" effect by making you sweaty on the stomach. It is not painful to wear, even when sitting.

I really like this product. Like I said, I wish I could also get one smaller to alternate with, but this one will be good for regular days when I just want to feel slimmer.