Graduation photograph

Hi everyone,

I am graduating from university and need to have a graduation portrait of some sort to send to my parents. I am not looking for a full set of professional photos, just one would be fine. I do not want to pay a lot of money for this.

Does anyone know where I can have this done? Or, better yet, where I can borrow a graduation robe from for 15 minutes or so? Does anyone have anything that looks like a robe which I could borrow?

Thanks!