Popsugar Entertainment Halloween Pop Culture Halloween Costumes 2015 This Year's Hottest Pop-Culture-Inspired Costumes October 28, 2015 by Shannon Vestal Robson View On One Page Photo 67 of 68 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 67 The Barden Bellas From Pitch Perfect 2 What to wear: Black pants with zippered pockets, a white shirt, and a navy vest. How to act: Like you're gearing up for a big performance against Das Sound Machine. Previous Next Start Slideshow HalloweenHalloween CostumesTVMovies