I am 5'7" and 130 pounds. I ordered the Medium. Not super tight, yet not super loose, just a bit of support. I was not looking for something super tight, that scrunches me in, just some smoothing underneath work office type pants. This works great, however, I am going to order a large as well. Just so I can have both; each will work differently for the different type of pants. Since I have a long torso, these do not go up to my bra, but rather sit at the lower tummy area. The bottom of the leggiSee full review