Only quite little extra styling are needed if your costume incorporates those round frames. Round glasses can be the epitome of retro fashion, full of British style and provide a great final touch!
I will recommend round metal specs like Harry Potter style, matching with the squiggle onto your forehead. This will definitely earn you some double-takes as people marvel at the fact that you coincidentally have the same scar as Harry Potter.
I tried to master the costume with simple twists, baggy sweater, berets and of course – some over-sized spectacles. Bonus points if you can rock those iconic pumpkin!