Sunglasses are the solar system's way of giving you practical style.
The 100 degree weather (like in Atlanta) will make you sweat from everywhere except your eyes, if you have some cool sunglasses (no pun intended). There are tons of articles on how certain face shapes are good with certain frame shapes, and the idea makes sense for the most part. I just don't see it as a hard and fast rule. As long as you aren't trying to make goggles a thing, you can pretty much rock whatever you love as long as you go forth with confidence. Goggles will most eventually make your confidence and self-esteem plummet - once you run into other humans and get laughed at uncontrollably (unless you're Horace Grant). But almost everything else is on the table.
I get called out sometimes for wearing my sunglasses at night, but I can't help but be inspired by the Corey Hart jam. There are rules and knowing when, and where, to break them. But if you get called out, you must either take them off or sing the song.
The good thing about shades is that they don't have to be a budget buster at all. You can get them at a gas station if you so choose. Or you can get great designer frames for some pretty slick deals online. You do run the risk of not knowing exactly how they'd fit until you try them, so you can go the cost-effective route of trying them on at the store and, if you find one you like, search for it online and hope for the best! And rather than going all out for just one pair, try collecting a few different styles in various colors so that your frames match your style game.
Here are some of my faves:
Ballin' out of control:
You can't go wrong with Tom Ford
Ballin' on a budget:
Topman and other fast fashion retailers have plenty of cheap sunglasses. For those that seem to lose every pair they get, opt for something like this: