What to Wear: Wear the preppiest, most obnoxious rich-person clothes you can find. Make it a little kitschy, with stripes and opulent ties, and perhaps even a cane. Don't forget to get that middle-part hairdo going, and add blood if you want to channel the later, more unhinged version of Dandy.
How to Act: Like a spoiled toddler who's out for blood.