Americans will spend a record $370 MILLION on Halloween costumes for their pets this year, mostly on dogs. According to a shopping website called Wayfair.com, these are the five that have been selling the best . So ridiculous but so cute!

#5.)  Chef.

#4.)  Taco.  (--Here's a second taco option as well.)

#3.)  Lederhosen.

#2.)  Elephant.

#1.)  Superhero.