5'5", 130lbs, normally wear a size 4 or 6 pant - I bought a medium and a small and I kept the small in the green. So, if anything, the skirt runs a little large. I LOVE this skirt and it fits really well - it is very flattering since it's tight but a good fabric, great short/flirty length (NOT business casual), with the lovely light weight fabric that Prana uses so often. WARNING - if you wear this skirt on a really hot day, and you're sitting on a plastic lawn chair for a few hours in the sun talking to friends - the swamp ass will show a LOT when you stand up again,until it wicks away...which happens quickly, but just letting you know! :) Finally, the dark green looks really good on us olive skin-toned brunettes! Enjoy!