BLACKPINK star LISA embraced an aquatic twist for Halloween 2026, appearing in a mermaid-inspired look that stood out among the season’s pop-star costumes, according to a Halloween costume roundup published on October 31. The look swapped the usual horror or superhero route for something softer, shimmering and unmistakably under the sea.
The roundup, which also covered Harry Styles, KATSEYE, Olivia Rodrigo and Tyla, described LISA’s costume as mermaid-inspired, a choice that played to her strengths as a visual performer. Mermaid costumes live or die on detail, from the tail silhouette to the colour palette, and LISA’s version leaned into the fantasy rather than the fright, offering fans a look that photographed well on social media and on stage-adjacent posts alike.
A season of stage costumes
Many of this year’s music-star Halloween looks arrived mid-tour, rather than at a party, and LISA’s fitted that pattern. Artists on tour have used Halloween shows and soundchecks as their costume moment, turning a working night into a fancy-dress event for the audience in the room and the much larger audience online.
That context matters for why the mermaid worked. A costume that reads instantly in a photograph, without needing a caption to explain it, travels further than a clever but obscure reference. A mermaid needs no explanation, and LISA’s take on it gave fans a clean, shareable image at the height of Halloween weekend.
Why fans loved it
LISA’s solo career and BLACKPINK work have both traded on strong visual identities, and Halloween is a natural extension of that. Fans praised the look in costume roundups as one of the season’s more elegant choices, a contrast to the gorier and more ironic looks elsewhere in the same lists. It also showed how broad Halloween 2026 became: alongside Elvis tributes and superhero groups, there was room for a straightforward fantasy creature, done well.
As the weekend’s party looks continue to emerge, LISA’s mermaid is already fixed as one of the early, widely shared images of the season, and a reminder that the simplest costume ideas often travel furthest.
The mermaid also fitted LISA’s recent solo visual language, which has leaned heavily on fantasy, water and transformation. Fans who follow her solo work recognised that continuity, and costume roundups treated the look as an extension of her stage identity rather than a one-off joke.
