I should have payed closer attention to the seller's size charts because I should have gone a size or two up. I chose a medium without thinking because that's what I usually wear. The spandex part is pretty forgiving though so I can still wear these, but I'll likely order more in a size up for comfort in the future. It's possible to pull it up or roll the top spandex portion down to make the petticoat shorter which is nice. I noticed that the black one is a bit tighter than the white and I'm not sure why that is- they came packed together and are the same size. Right out of the package just giving a gentle tug to fluff it out it forms a nice full petticoat.