] I'd like to know if anyone sees the clothing imagery as I do: it's about clothing as costume. One of the biggest problems all of the characters have in Hamlet is trying to figure out who is putting on an act and who is genuinely feeling something.

This is great stuff, Laraine. Yes, clothing = costume very much in Hamlet. And there is the scene with Gertrude where Hamlet encourages her to assume a virtue, as if putting on a frock, in the hopes that it will eentually prove to be true if only through habit.