I think a decent black long dress would be a good choice, and do not put too much make up (don't use very red lipsticks), try to look smart and elegant.
What Kind Of Dress Should I Wear To A Formal Church Banquet?
Go for formal wear that will something covers your tummy, and covers you
well - but you can wear some cool and bright color.
well - but you can wear some cool and bright color.
I think a simple sundress would be fine=)