Post-Edwardian but pre-Modernist?

For my Masters in Fashion studies I have focused on that place in 20th century history where women began to eschew corsets. A new more tubular body silhouette became popular and eventually pushed out the S-shaped Gibson girl of the Edwardian Era. In researching that place of change, I have discovered a world of particular matrimonial, sexual and boudoir social codes which influenced ladies underthings. Here is a visual list of garments (with captioned information where possible) which exemplify the stylistic tension that existed.