According to the National Retail Foundation, Americans are expected to spend a little more than $2 billion on costumes for adults, children, and pets.
There are three things most children want to be while while out trick-or-treating.
You're most likely going to see little princesses, various baby animals, and pint-sized Batmans roaming the streets.
Costumes are just one part of the bill.
There's also decorations and candy. This year, total spending is expected to reach $6.9 billion.