Hallo-there, Halloween stans: it’s time to start prepping your costumes for Oct. 31! This year, if you want to pick out the buzziest, most creative, and unique costumes for the wicked-fun holiday, we’ve rounded up what in our heart of hearts we know will get you on the podium for best costume of 2021. From ideas that will have you saying “that’s SO 2021” — hello, Peloton instructors — to pop culture moments like Olivia Rodrigo at the White House and looks inspired by captivating characters like Bridgerton‘s Lady Whistledown and Queen Charlotte, prepare to be inspired by the celebs, TV shows, movies, music videos, and viral moments that made 2021 memorable. Whether you’re looking for couples costumes, group costumes, or individual ideas, you’re sure to find something in here to fit your fancy. Keep reading for the best Halloween costume ideas of 2021.