The Kyoto Costume Institute has created a database of the items in its Collection called the KCI Digital Archives and this link presents a taste of the content with image and text for approx. 200 objects from their collection, arranged in chronological order. The design of the timeline of costume from the 18th century to the present and the quality of the images are both superb. I've seen a lot of websites and a lot of image databases-this one is small but perfectly formed.
And if you can get to Kyoto and the Costume Institute there you would be able to view the complete digital archives in the KCI Study Room under a fee-paying, reservation-only basis. Providing support for the work of designers and researchers, text and visuals are available for all 12,000 items (costume, underwear, accessories, etc.) in the collection.