Generally in Corporates the following is a 'NOT Acceptable' Dress code. Tank tops, sweatshirts, tee shirts, halter tops, bare midriffs, spaghetti tops, strapless or plunge cut blouses or dresses, shirts with writing or pictures printed on them
Beachwear, overalls, spandex or other form-fitting attire, and distracting or revealing clothes of any sort.
This can act like a guidance for a public function where "decent" dress code is expected