I am indifferent towards her, I neither like or dislike her because the only thing I've ever seen her in is Twilight. I've read all the books and find Bella annoying, therefore I found KS annoying as well. But obviously I can't formulate an opinion based on that alone which is why I am indifferent.
I will say one thing... I find her demeanor in most pics intriguing, in the sense that I think I probably would like her. She doesn't seem like the glitzy-glam, mile-long extensions, label-toting Hollywood starlette like others have mentioned. I could be wrong, but who knows, lol.