Any time a rock star steps into a room, they are the automatically coolest person there. Rock stars are just inherently smoother, better-looking, and generally more hip than the rest of us. That's just a scientific fact. They may not have classic features or perfect bodies, but their stage presence an musical abilities put them in a class of their own. Of course, it's not the only class the celebrities have ever known. Not all rock stars were born cool.In fact, there are plenty of rock stars who were nerds growing up, and only found their coolness when they hit it big. This list of musicians who were nerds (and some who still are) may surprise you, but don't get too cocky. These famous rock stars who were nerdy kids are still cooler than you'll ever be.