The 5th key player in French fashion was Marie Antoinette…

.. Marie was a foreigner in France, & largely disliked from the start by the populace.  It did not help her public image when Louis required her to set the trends of the huge & elaborate fashions of the 1780’s, which made her look wasteful while people were hungry.

By 1790, Marie was rebelling as best a queen could, by retreating to her country farm, where she would dress in versions of her white underwear.

Condemned to the guillotine alongside her husband because of her supposed excesses, her executioners did so while wearing the simple, inexpensive & completely “non-excessive” Regency style that she had introduced.

(portraits: Marie Antoinette in summer Court dress; (below) softer “gaulle” stages of her fashion)