They do run big, but the length is perfect - I'm 5' 6" and usually wear a size 14 or 15 in juniors.  I tried the 15 and 13 in WallFlower brand and they were both too big.  The jeans fit pretty well and are high enough cut to cover your crack when you're bending over or squatting down.  What I don't like is the front is a little too high of a rise for me.  My fat belly often ends up flipping the waistband down when I'm sitting.  That said, It does reduce the look of lovehandles and the look of muffin top/gut.  I also have to pull them up after I"ve been walking for a bit, but that's pretty typical - especially out of a midrise jean for me.