without knowing more specifics about the event, i'm going to vomit suggestions.
1) white shorts and a fun tee/ mariniere/linen shirt.
2) white shorts and a short kaftan for a slightly dressier evening but not super formal (https://www.amazon.com/gp/prod.....&th=1) has lots of choices.
3) maxi or sundress for a slightly more formal event.
4) white linen pants and a white linen shirt for formal events--massimo dutti has some great one.
i've put stuff in the finds.