It would be a bad time to wear my husband's Darth Vader costume there.
He has that same helmet, but I did a better job on the rest of the costume.
I've always thought Darth Vader was sexy...I'm thinking that costume might come in handy not just for fancy dress parties
(Mind you, a poor Darth Vader who has to rob a bank for money is dead unsexy!)
My husband thinks Princess Leia is sexy, too, but he prefers the metal bikini Leia to the long white dress and cinnamon buns hairdo Leia, which is my costume. Halloweens here are too cold for metal bikinis.
Given the actual relationship between Darth Vader and Princess Leia, I think it would be weird to wear them for home theatrical productions, anyway.