You have asked me to talk about “Fashion and Dress Museology” – two terms I initially introduced in the edited book Fashion and Museums: Theory and Practice (published by Bloomsbury in 2014) in order to organize and understand the developments around the entrance of fashion into mainly art and social history museums since the 20th century. The concepts helped to describe what was going on particularly in the early 21st century, when the presence of fashion in museums seemed to explode, not only at the great international, metropolitan museums, but also at museums on the periphery.