When I graduated college a little over two years ago, I had long hair and sideburns.
As I went about pounding the pavement looking for full-time work in IT, I got a lot of "sorry, we're not looking for interns" or "we need someone with more experience" (the latter before even looking at my resume).
You're already fighting an uphill battle to be taken seriously because you're so young, so you need to do what you can to shed the "kid" image.
When I finally cut my hair, I got three job offers shortly after, and most of my college friends thought it looked better short anyway.
But save some "before" pictures so you can still show people what a rebellious youth you were