This page lists subscription-based and free-to-access sources for fashion.
Alexander Street Press, Kanopy, Artfilms and Box of Broadcasts all have a great deal of fashion-related content. Kanopy has a fashion section, with over 300 fashion videos, Artfilms has a Design/Fashion section, which includes Masters of Fashion, a multi-part series on fashion designers. Box of Broadcasts has films and programmes covering a whole range of subjects that can be used for inspiration. Take a look at the public playlists on fashion for an idea of what is available. And Alexander Street Press has over 2000 fashion-related videos from the 1970s up to more recent times, including for example The Year in Fashion 1985-2014.