Popsugar Entertainment Halloween Riverdale Halloween Costumes How You and Your Friends Can Dress Up as Riverdale Characters This Halloween October 23, 2019 by Kelsie Gibson View On One Page Photo 3 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Betty What to wear: A light pink sweater, jeans, and ballet flats. Wear your hair in a tight ponytail. How to act: Like a modern-day Nancy Drew. If there's a mystery, try to get to the bottom of it. Previous Next Start Slideshow HalloweenRiverdaleHalloween CostumesHalloween Costumes 2019Group Halloween CostumesPop Culture Halloween CostumesTV