Pope Francis recently addressed vanity in one of his homilies:
Greed, vanity, and pride are the roots of all evils….
The vanity that makes us swell up. The vanity that does not have long life, because it is like a soap bubble. The vanity that does not give us true gain. What profit comes to the person for all the effort he puts into worrying? He is anxious to appear, to pretend, to seem. This is vanity. If we want to speak simply: vanity is covering up real life. And this makes the soul sick. Because in the end, if they cover up their real life in order to appear or to seem a certain way, all the things they do to pretend… What is gained? Vanity is like an osteoporosis of the soul: the bones seem good on the outside, but within they are totally ruined. Vanity makes us a fraud.