You can’t legislate good taste of appropriate attire. Bless them for trying. If you’re the type of individual who will appear at an event completely inappropriately dressed…believe me…there will be giggling and laughing behind your back. A pair of jeans one or two sizes larger, which cover a bit more , don’t cost more. It’s just harder to pick the ones with the lager number on the tag.
Just hand out gowns for the event. Once which need to be worn or you can’t participate. The gowns would be FREE FREE FREE FREE FREE FREE to the user.
Really, if we spent a little bit less time and energy finding ways to be insulted, offended, ‘disrespected’ we’d all just ‘get along’ much better.