Halloween Costume

At work, we had some Halloween festivities for which anyone not wearing a costume would be considered a total square. Here was mine:


In case you can't tell the details from the picture:

• I'm wearing a neon green fanny pack
• The shirt says "Fashion Club" and has a picture of some cutesy bunny or dog
• The hat has a solar-powered fan, which has been confirmed to be functional (see below for close-up)

And now for a close-up of the hat, because really, the hat made the outfit:


Can you tell what I am?