The question The origin of "knickers in a knot" and "knickers in a twist" was closed for lack of research. I have added a paragraph to the question pointing out that in a reputable and fairly recent dictionary of idioms (the 1998 Cambridge International Dictionary of Idioms) the entry for the phrases that the poster asks about does not answer the poster's question about their exact origin.
Since the question now shows some research, I think it ought not remain closed for not showing research. Please consider voting to reopen it. Thanks.