the interesting follow up question would be: Are beautiful people more moral?

There certainly can be a reinforcement effect: If the world is nice to you, you are nice to the world. However, if you notice that the world is nice to you for no good reason (like your looks), you might abuse this, e.g. you take things for granted (e.g. people doing stuff for you) that you should not. However, I'd bet most studies that would try to find out if beautiful people are more or less moral, couldn't be reproduced since there are way too many things that might affect this.