I've made it twice to the Maryhill Museum to visit the Théâtre de la Mode on permanent exhibition (with rotating elements of the exhibit), so I put some of my thoughts about it in writing:
https://vintagefashionguild.org/blog/my-visit-to-the-thtre-de-la-mode/
https://vintagefashionguild.org/blog/my-visit-to-the-thtre-de-la-mode/