I am not that skinny, and yet when I tried on the small, my legs and butt were practically swimming in them. Good thing that they're drawstring as I could pull those strings out and tighten them around my waist because I'm afraid they would've slid off after walking a few steps.  I was misled by the self-proclaimed "very skinny people" in the reviews who said that they were true to size and ordered extra small. Well, I'm pretty thin in appearance, but I could definitely lose 20 lbs and still be healthy, and the small was significantly too large so either some people may be in denial of how thin they really are or we received different pants. I have already placed the order for extra small.  Other than the sizing issue, they're comfy, stylish, and have nice roomy pockets, which are very rare things in women's clothing.