She's not the type I like at all, but I do really love the render. As for your question, I think she looks fine as it is, if you made her hips and legs thinner, then she'd be too top heavy. Which..CAN happen, but is generally not the case. How did you change the height? Personally, I just scale the model on all axis but that's a hack and it's not really accurate. Also, what apartment is that? It looks really nice and potentially something I'd like to have as a background if/when I decide to move away from the solid color or gradient backgrounds.
And I know you didn't ask for it, your question was about the proportions, but one thing I'd change is the skin spec. Either by globally lowering it, or locally through the use of a spec map, if you have or want to create one. Especially on her right areola, the light should be a lot more diffused. This one is almost reflecting, almost as much as a normal eyeball should be. Could be wrong about it but it seems you have a rectangular light source in front of her, and I guess that simply by the glossiness/reflection on her right areola and left breast. That..shouldn't be possible, save for being covered in oil or something.