Whatup John. The K Skinnys fit slimmer than the slims. KR3W's specs for the two are: K Slim has a 33" inseam, 9" rise, 16" leg opening. K Skinny has a 33" inseam, 9" rise and a 14" leg opening.
So basically, the rise and inseam is the same but the leg will be much slimmer on the skinnys. Hope that helps.