Thank you so much for posting this! In our day especially when mothers are reluctant to take their children even to the grocery store for fear of what their children will see, I have copied this which I consider very important:
WHAT IS MEANT BY SOCIAL MODESTY?
Social modesty may be defined as a virtue which seeks to protect the chastity of other persons, or at least not to endanger it. It is ever careful to avoid anything that is calculated to excite bad thoughts and desires in others or to lead them to sinful actions.
Social modesty requires decent attire in the presence of others, even about the home; the avoidance of all undo familiarity, especially with the opposite sex, and suggestive looks, speech, gait, etc.; and in general a prudent reserve in one's whole appearance and behavior.
IS SOCIAL IMMODESTY LIKEWISE SINFUL?
Again, there are some who try to excuse from sin if there is no bad intention connected with social immodesty. Thus, they see nothing wrong in wearing an immodest dress just to be in style. Yes, it is wrong, and it can be seriously sinful. For in this case, another commandment is involved, the law of charity.
Regardless of one's intentions, there exists an obligation in conscience to avoid unnecessary temptations to others by such immodesty, be it in dress or otherwise.