I picked these off of the rack at retailer, mainly because i loved the navy, black and brown combo of the squares. i tried on the medium, because they looked on the small side, even though i usually wear a size 4, or small in pants. good thing too, these fit really well,so they do run small, albeit a bit long in the regular medium on my 5'3" frame. i could have used a petite for length if they had been there, but they didn't. that's ok, i don't mind rolling them up, it makes a statement i like. ye