Instant preppiness can be achieved by simply donning a polo shirt (or tennis shirt or golf shirt, whatever term tickles your fancy). My favorite way to wear a polo is with grungy jeans and messy accessories, because I guess I'm into that weird juxtaposed look.

Lacoste is probably the most popular brand for this shirt, and rightfully so. René Lacoste was a French tennis player, working when the sport's players still had to compete while wearing suits and ties. Looking for a creative alternative to their traditional stuffy attire, Lacoste created what we now know as the polo shirt -- he used it as a tennis shirt, obviously -- and started his own line of clothing: Gucci.

No, I'm just kidding, it was Lacoste. I was just testing you, see?

Other popular polo shirts come from Ralph Lauren's Polo line and just about any other place on the face of this earth that sells Western clothing. Seriously, polo shirts are everywhere. Also, it's tough to go wrong with a polo shirt, as long as it's not too baggy and fits close to the body. Honestly, it's just a glorified knit shirt, darlings.

Fun fact: Before annoying rich kids in high school made it look obnoxious, flipping the collar up on a polo shirt was not for fashion, but for function. Wearing the collar up would protect the wearer's neck from the sun during outdoor games.