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 39 of 68 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 39 Supergirl From Supergirl What to wear: You know this outfit! Wear a blue long-sleeve leotard with a red miniskirt and red cape. How to act: Virtuous and like you might leap out of the building at any minute. Previous Next Start Slideshow HalloweenHalloween CostumesTVMovies