I think that many Western women feel insulted by this. Simply because most of those women do dress modestly, not because they are in Qatar, but they generally do . In all my years in
Qatar I have not seen a Western woman show her midriff, sure, they may wear summer dresses that show the shoulders,or a skirt that ends a centimeter above the knees, but those are still very modest.
Generally, I think this campaign may have the opposite effect from what it aims at.