There are places you can get away with it, but the industry as a whole is still very business-centric. I've heard of places were people are required to wear slacks everyday.
Until I left, my previous company's policy were shoes (not sneakers, or black sneakers), collard shirt (right now your thinking polo!.. but read on), tie (yeah, so that nixes the polo), slacks. On Fridays, you get to take off the tie.
Come to work without a tie? Go back home. I always kept a backup because sometimes you forget!!!
I think it depends a lot on the reputation you build around yourself.
Ever noticed how the design/artistry department gets away with looking all sorts of crazy creative? If you convince people around you that you are crazy creative then you get to dress pretty much any way you want!
Of course this must not be a show you put on, you must always be like this.
