Popsugar Entertainment Halloween Costumes 2021 The Best Pop Culture Halloween Costume Ideas For 2021 60 of the Best Pop Culture Halloween Costume Ideas For 2021, From Marvel Heroes to Cruella de Vil 9 September 2021 by Alessia Santoro View On One Page Photo 39 of 56 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 39 Betty From Riverdale What to wear for Betty: Got a high beige turtleneck? Good. Wear that under a green bomber jacket and complete your look with a green plaid skirt. Pull your hair tightly back, and you're ready to roll. Previous Next Start Slideshow Halloween Costumes 2021Halloween Costumes For MenGroup Halloween CostumesDisney Halloween CostumesHalloween Costumes For WomenCouple Halloween CostumesPop Culture Halloween CostumesMoviesHalloween CostumesHalloween