The Seattle Opera Costume Shop has over 1300 linear feet of costume items, ranging from tricorn hats to corsets to feathered bird tails, but lacked a comprehensive inventory of its stock. The Costume Database project aimed to tackle a fraction of this problem by creating a database of its rental stock. The new cloud-based database describes, tracks and links costume changes, actors, characters, individual costume items, and more for better access and searchability for shop staff, designers, and outside opera companies.