I own several pairs of the KP RS flats as a outcome of they're more comfortable than the originals because of extra padding. For kitten heels, the unique RS are more snug than the KP ones mainly as a outcome of I suppose the patent leather is a bit softer. I actually have a pair of the Kaitlyn Pan excessive heel RS within the black patent / nude and liked them a lot I ordered a second pair within the lower "kitten" heel fashion in patent nude/nude . Another plus for the KPs is that they're simply returnable. Thicker pretend leather, about the same thickness as KP’s. Studs are visible on the