Lois a poster just described ordering online and having to send things back because it wasn't clear from the description they'd be see through etc.
People on this thread who feel strongly aren't doing themselves any favours by calling anyone not agreeing with them hard of thinking and ignoring posts that make sensible points in favour of easier to pounce on ones.
The argument that no other clothes are labelled with words used for morals is weak because what other morals are there that could be applied to clothing? Faithful clothing? Truthful clothing? Non murdery clothing? Non thieving clothing? That argument seems as nonsensical as saying "M&S is saying that anyone not buying from the modest range is a whore" when they patently do not want to put people off buying their other clothing. "M&S could, if someone wished to use the range for different purposes, be seen as saying other clothes are not modest, even though they would be shooting themselves in the foot if they really meant to imply that" would be realistic.
Twisting words and banning words and telling people what they can call themselves is also Orwellian. Words are powerful and the Orwell reference is being used as a blunt instrument along a #nodebate line of thinking by some here 
There has to be debate about everything, and trying to silence anyone who doesn't agree by saying they are not intelligent or well read enough to understand that they are wrong is to try to shame people out of speaking, which is poisonous.