Not all pins are created equal, especially when it comes to your updos. And while bobby pins are one of the more common hair helpers in the market, they aren't the only ones out there. Old-school hairpins are a definite must have for any woman who is serious about her hairstyles, whether it be a simple topknot or an elaborate updo. The secret is that both types of pins are necessary for your achieving your desired style. But how do you know the difference? It's actually quite simple. Just keep reading for more.