The Emperor's New Clothes (1968)

Once upon a time there was a king who loved to dress up so much that he spent all his money on new dresses. If they said about some kings: “The king is in council,” then they said about this: “The king is in the dressing room.” There were two rules in his kingdom: the first was to love the king, the second rule was to praise his outfits. But two cheerful wanderers decided to teach the king a lesson for his stupidity; they introduced themselves as overseas tailors, promising to sew him a dress that everyone could see, except for... fools.