Marie-Antoinette hated them. According to Fashion is My Muse:
To French aristocrats, a tightly corseted body represented "the norms of stiffness and self-control" expected of the ruling caste. Marie-Antoinette's position required her to wear a form of corset called a grand corps. This more rigid form of corset was the "mark of supreme distinction". Only France's greatest princesses had the right to wear this undergarment on a regular basis. Other noblewomen were allowed to wear it only on the day of their presentation at court and after that, only at specially designated formal functions. This corset was stiffer than a regular corset and made breathing, eating and even moving one's arms difficult.
(Via Versailles and More)