I'm sure it helps, but I don't think it's going to make you more successful. Maybe societal attention is more appropriate. I recall reading a study that attractive people make more money, but I don't recall what facts it used to back that up. But, I think money is more important than looks. But when they're combined you get ahead a lot faster.
My teacher said that some study showed that good looking kids are treated better by their parents then ugly kids.
They would go into a supermarket and rate a kid's looks from 1-10 then observe how attentive the parent was to the kid and whether or not they would strap their kids in the seat in the shopping cart, how far they would let them roam on their own, etc.