Different events and places call for a designated way of dressing. Muslim countries are known for their reserved mode of dressing, their religion dictates what, when and how to wear it. And their norms apply to any other women including the non-Muslims. So if you are visiting a Muslim country, one thing is certain, your wardrobe will change for all that time you will spend there.
This is a veil worn by Muslim women beyond the age of puberty, intended to cover the face and the chest especially in the presence of males or other non-Muslim women.
Garments worn by women - fully covering from head to toe, the only thing visible are the eyes or at some point nothing is visible at all.
This is a robe, long and loose. It covers the entire body and face, often worn along with a veil across the face. A little slit is left open to enable the wearer to see.
If you are a non-Muslim but planning to visit one of those Muslim countries, this attire might just be what you need, it is a thigh-length coat available in a range of colors. A scarf is also recommended for non-Muslim women, exposure of hair and shoulders is considered a taboo. Different countries have different standards, and in all Muslim countries, there are clothing restrictions, exposing your skin is a no-go. Doing the contrary is against the law and punishable too. So be careful next time you plan to visit a Muslim country.