My niece’s birthday is on Halloween, and this year, that lands on a Saturday. Her party will be that day, and it’s going to be a costume party. I’m looking for a great couples costume idea for her party- NOTHING SCARY!!

Last year we were mad scientists who had gotten "blown up" in the lab- smoke all over our faces, my pigtails with wires standing strait up… and I need something equally fun if not better for this year.
Any ideas??