1. Being tall.
It's long been known that we live in a height-ist society. Research from 2009 found that for every two inches taller you were, you'd earn an average of $1000 more per year.
2. Being blonde.
In a 2010 Australian study, researchers found that blonde women, on average, make seven percent more than their non-blonde counterparts.
Oddly, the study also found that blonde women on average married wealthier men. The president of the International Blondes Association (a thing that actually exists) explained this by saying, "Blondes have wealthier husbands because we are more fun and outgoing, and men are more attracted to us."
So make of that what you will.