Suit, tux, gown or very nice dress.
It is usually the perfect suit for gentelmen and gown for the lady.
Depends on the dress of host. It should be specified on your invitations.
Think castle. Stately and classic. Men should wear suits.
Suit or gown
I wore a black dressy dress but some people dressed in fancy pants and a dressy top I think it's really up to what you feel comfortable with
It's a beautiful and elegant place. You should be little more dressy. And it totally depends on your circle and party.
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