Maybe it's just me, but I definitely don't keep track of measurements as a way to track which girls are good looking. In fact, I don't even know where those measurements fall in the spectrum of above or below average. I can say that there are many, many other things that go into an attractive girl besides simple measurements. Proportion, grace, confidence, hairstyle, personality, athleticism, intelligence, sense of humor, the list could go on and on. As someone said below, the more you are comfortable with yourself, the better. AJtogo is right that some of the most attractive girls have smaller boobs, they're definitely not a detriment.
I don't think that you should worry whether your body type is ok! I'm not one of those girls who preach all that jazz about loving yourself, and guys will appreciate your confidence. But I do agree with it on some level. You shouldn't have to ask a website whether your body type is ok. What if everyone said it wasn't? How were you possibly going to change how you look. I'm sure you're body type is beautiful because I've come to realize how different and unique everyone is. You sound slim, and perfectly fine. So, in lieu of sounding too cliche, LOVE YOURSELF.