Popsugar Living Halloween Costumes 2019 Best Halloween Costumes Under $50 The 50 Best Halloween Costumes This Year — and They're All Under $50 9 August 2019 by Rebecca Brown View On One Page Photo 49 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 49 Women's Deep Sea Siren Mermaid Costume You won't have cold fins in this Women's Deep Sea Siren Mermaid Costume ($50). Women's Deep Sea Siren Mermaid Costume $50 from target.com Buy Now Previous Next Start Slideshow Halloween Costumes 2019ShoppableHalloween CostumesHalloween