Everybody's doing it! No, really, there's 500 people here

This isn't my full sketch or whatnot, (*feels totally put up by other art submissions*), just a doodle that I did while scanning in a ton of my other homework. (Yes, I'm at school, shut your face). My 'real' one is in my sketchbook, which I woe-begotteningly forgot at home. :(

I'll probably be adding batgirl after batgirl to this post anyway. She's so fun to draw!