I'd like to think I don't have back fat or panty lines or tan lines, but I'm not so sure. Okay, I'm sure about the tan lines. I'm always aware how a customer (at the Lovely Boutique Where I Work) looks from the back as that's my job. I feel I've saved many a lass in love with a dress from the front by showing her how is just isn't fitting or flattering from the back. But who tells me??? And you, in the privacy of your own dressing inner sanctum? Could this call for a selfie stick?
Obviously certain types of outfits will be more susceptible to scrutiny than others. Bathing suits would be one, party clothes another. And while we can forgive a lot of what we see on the beach (not wanting to be first to throw stones), a special evening calls for special attention to detail.
Besides, a three-way mirror is cheaper than growing eyes in the back of your head.