On April 18th, ARTstor is going to have a webinar about resources in fashion and costume. They have a wealth of images related to this topic. For example, ARTstor hosts images of the collection that was moved from the Brooklyn Museum to the Met, along with a wide variety from other institutions.
Before signing up for the webinar, patrons will have to register as a user of the ARTstor Digital Library on campus. After that, access to the webinar and the library will be available from anywhere.
Here's the link to register for the webinar: http://www.artstor.org/webinars?view=ADL