Reply To: wearing a tank top with a shell under???

I shared some of the comments of this thread with my wife. She has a question for those who emphaticly state “tight fitting sleeves are pritzusdik and in violation of hilchos tznius. “Can you please provide a source for this psak? The name of the Rav who issued it. The name of the sefer in which it appears. A tznius guide that mentions this. Something?”

Thanks.