The competition for the hottest 2020 Halloween costume [1] 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 [2] costumes. There are pop culture references [3] like Harley Quinn and Fortnite, nostalgic costumes inspired by the '80s [4] and '90s [5], 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.