The phrase represents a specific type of attire often worn during a particular holiday. It combines themes of celestial beings with macabre or sinister elements, resulting in a visual presentation that contrasts purity and malevolence. Such attire typically includes dark-colored garments, often incorporating feathered wings or other symbolic accessories associated with angels, but with a distinctly darker aesthetic.
This style of costume is popular because it offers a compelling blend of opposing concepts. It provides an opportunity to explore the duality of good and evil, light and shadow, in a visually striking manner. Historically, the symbolism of fallen angels and the exploration of darker aspects of spirituality have been consistent themes in art, literature, and, more recently, popular culture. The appeal lies in the ability to subvert traditional imagery and create a more complex and intriguing character portrayal.