Periods of social upheaval tend to be difficult for all concerned. More can always be said on the matter of what Marie Antoinette did or did not say, so if anyone would like to contribute further, please don't hesitate to do so! We can always use more posts and contributors.

In the meantime, OP, as this has arisen before, you may be interested in the following threads:

• u/Superplaner examines the phrase and the person;
• u/mimicofmodes has a further analysis of the phrase and why it stuck;
• and for bonus, mimicofmodes also has A Day In The Life Of Marie Antoinette, with follow-ups.