I agree with you. I like the fuller hip look too and think many women that compete are just too thin all around or have minimal glute development.
No, I don't take any supplements, pre-workout, or no protein powder. I make it a point to avoid soy (soy protein isolate [most protein powders], soybean oil, soy lethicin, etc.) and fluoride as well. I avoid soy because it has been shown that soy is high in estrogen, and fluoride because it suppresses thyroid function (among many other things) which can negatively impact your metabolism.
People will disagree with me, but look at my results (look at the pics on my page as well).
I also avoid processed food and try to eat organic when I can. If a man made it, don't eat it!