As Party City Holdco Inc. wades through bankruptcy, some of its most important vendors are banding together to negotiate better trade terms for a holiday the company relies on: Halloween.

A Party City representative added that the store in question was a franchise operation and that the costume isn’t available at any of the company’s corporate-owned branches.

SAN ANTONIO — Its a spooky time of year for Party City. Some of the more popular costumes are superheroes like Wonder Woman and Deadpool. Other top picks are characters from recent movies, like ...

Party City announced Thursday that it will try selling Halloween costumes on the giant online retailer. If it’s successful, the company will expand to Christmas and New Year’s decorations.