Listen, buddy. We can do this the easy way or the hard way. You're here, aren't you? I'm guessing you're looking for some guidance. I could throw a bunch of cryptic buzzwords at you—squarer styles tend to be a better fit for rounder faces, wider frames will balance out longer features, etc—but the truth is, the key to pulling off the sunglasses of your choice is actually pretty straightforward: be confident.

Sure, conventional wisdom holds that rounder styles tend to complement squarer faces, and vice versa, but since when are you conventional? And swearing off any shape of shades entirely ain't it, man. Life's too short. It never hurts to play to your strengths by exercising a bit of caution, but if you're about to get the protractor out to start measuring angles here, rest assured a square-shaped frame that has slightly rounded edges, or a round-shaped frame that has slightly squared edges, is still going to look more than fine regardless of your face shape.

Basically, reaching for specific silhouettes—wayfarers, aviators, etc.—is a good rule of thumb if you're in a pinch and unsure of what to grab, but is an otherwise pretty limiting approach to picking out shades. So why not trust me, go with your gut, and buy a damn pair already. Would I steer you wrong?