@SaraLin,
My husband facilitated a CDing social group for a while (SO’s included). There was a CDer who showed up in a skimpy short dress and the bra on the outside of the dress. The others let it go for the “in” portion of the meeting but when they were ready to go clubbing, they “helped” by somehow trying to hide the bra (barely) inside the dress. I must say, everyone was very polite and diplomatic about rearranging the presentation!