And The Most Popular Trending Halloween Costume is….

Harley Quinn! She is Batman's female adversary in the comic book series from DC Comics.

Google set up a website called Frightgeist, which uses daily search data from Google Trends to determine the top 500 costume searches in the U.S. and breaks them down by location.

Unfortunately they don't have New Jersey's top trending costume, but a "superhero" costume is the #1 costume trending in New York. Click here to see what costumes are popular in different parts of the country

The top 5 costumes trending nationally is:

1. Harley Quinn
2. Star Wars
3. Superhero
4. Pirate
5. Batman