Thanks to Phoebe De Gaye for introducing me to an online fashion on film archive, Screen Search Fashion.
In their own words -
This online resource provides a thematic guide to aspects of 1920s and 1930s fashion and dress as depicted in films from Screen Archive South East’s collections.
The selected themes guide you through the collections, using stills and clips from the archive. These enable you to discover more about the different types of clothing worn, and their historical and design contexts. There are links to records in the online film database, which can be explored in further detail, as well as links to related resources held in archives, libraries and museums.