Your costume suggestion
You wear a grey tunic, breeches and tights accented only with white collar and cuffs, because your mother says they make you look handsome. A small hand mirror comes in useful for naval gazing.
You were a teenager full of angst, and you’ve managed to become a young adult full of angst too - forever pondering an existential crisis you’ve yet to have, and missing all but the most blatant signs in front of you. Your father, King Hamlet, recently died in suspicious circumstances and you’re convinced someone close to you murdered him. Your uncle has married your mother and taken the title of King of Denmark, so you’re pretty sure there might be some motive there…
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Alas, poor Yorick, I knew him well - for I am Hamlet Omeletto, Prince of Denmark. Fondly will I remember Yorick’s last limericks, such a talented jester. ’Twas but the other morn’ he served me bacon and eggs in the Danish way. Too runny or not too runny, that was the question. In any case, at the time of the murder I was talking with my ghost of a father in my chambers.