Are my proportional to my body?

there is no 'right' size; that is why ppl have different sizes. You may be chasing a media ideal, but that too will inevitably change. I recommend reading up on beauty myths and some literature about female image to help put things into perspective. And stand up straight. Slouching only communicates lack of confidence, especially if you're tall. It means your compromising yourself for the shorter person. Don't do that. You don't have to.