The phrase refers to ensembles designed for adult males, characterized by whimsical and often eccentric attire evocative of the Mad Hatter character, typically worn during Halloween festivities. These outfits commonly feature oversized hats, mismatched garments, and distinctive makeup to emulate the fictional figure.
Such thematic dressing allows for creative expression and engagement with a well-known literary character during a celebratory occasion. The popularity of these costumes stems from the character’s recognizable features and the opportunity to interpret and personalize the attire, drawing on elements of fantasy and Victorian-era fashion. This offers a blend of theatricality and individual style.