Quote Originally Posted by SomberBallad
So this means she probably isn't really skinny and is probably a little more muscular or at least is probably pretty strong.
I agree that she's probably strong, but I think that there is absolutely no problem for her to be skinny, look at Ginny for example. She plays quidditch and she's still skinny.

Back to the main topic. I picture Katie as a not very tall girl, with brown hair, which is neither curly, not straight. Oh, and brown eyes. You can play around with her appearance, but I think that most people have this image of Katie in their heads