People should be nice to each other and not make things personal by the way.
"What if the fat, ugly one was better-qualified, Xenia? I've beaten many a skinny-minny in competitions for a job!"
True, I meant all things being equal. Also if the person recruiting doesn't want someone better looking around I suppose they might then be biased against the slim good looking one. But over all studies have shown looking good if all things are equal does help. Also if someone is clinically obese they're going to have a lot of time off work and ultimately might die, get diabetes etc so you're courting trouble by taking them on.