Everyone will say that inner beauty is more important, but the evidence is just the opposite. As you said yourself, people are usually hired based (at least in part) on their looks. This seems to be human nature, especially in modern society, people are attracted by aesthetic pleasure. It may not be good to admit this, but it's true.
Indeed, external beauty is very important, especially now, but not all jobs require or regard beauty as the primary condition for getting a job.