I'm 5'8" and 132lbs, but I've had three kids and am a little lumpy around the middle so wanted some smoothing under my clothes. Based on the size chart, I ordered a size 2.  Though I probably could have gone down to a 1 since it doesn't feel super tight.  I got this because it's inexpensive and has decent reviews.  I like it well enough and would recommend it.  It's not so tight that it's restricting at all and gives a light to medium support.  It is a bit higher in the waist (goes right up to my bra line and could go up further!) so it would be great for long waisted women. I have a fairly short waist, but it's not too awkwardly long.  I've worn it 5-10 times.  It is starting to have some rips in the crotch seam, but that could be due to the way I just yank them on and not necessarily a poor product.  So, pull them up gently!  :)