I am 5'6" and run between a size 9-10 pant. i ordered the size 10 skirt and the waist fit perfectly and so did the back of the skirt, which i was afraid might be loose (i don't really have a butt but it fits nicely). looks like the picture so the skirt goes straight down, it does not taper to smaller width like some regular pencil skirts might so the bottom part will not be fitted, for your reference. the denim actually has quite a lot of stretch so it's very comfortable as well as the waistband