The competition for the hottest 2020 Halloween costume is on! But what will be the top trends this year? Luckily, Google's here to help you get your creative costume juices flowing with its list of 2020's most-searched Halloween costumes. There are pop culture references like Harley Quinn and Fortnite, nostalgic costumes inspired by the '80s and '90s, and classic outfits like mice and astronauts; the results are a mixed bag of fun ideas. Go all out this year and get a feel for what people are searching for with Google's top 100 most-searched costumes, in descending order, ahead.