It seems there was some in the "Renaissance",but more for fetish use or game,and it was not possible to wear these ones permanently,or even long-term.
I agree! 😉
Angelina But the belt is definitely the easiest solution
And a very effective one...
No,chastity belts in Middle-Ages are a myth.
In "the Marriage of Figaro"(not sure of the english title),there is a "right of cuissage"(the right for the lord of someone of a lower class to be the first in the bed of the newlywed woman,during the wedding night),presented in the book as common in Middle-Ages,but I read(or watched,I don't remember)something about it,telling it was not used at all,even if some nobles may have tried to put it in their laws(but nothing prove it).
I think,as @Laura,it can still be fictional.
Funny fact,that you use "Charles le Grand",while,in France,we generally call him "Charlemagne"(even if both are right).
More probable,I think.