Acceptable dress code for Iran
T-shirts are acceptable.
No shorts are acceptable.
Wearing ties or bows is ok.
Females in Iran must dress according to the Islamic laws of hijab which it takes a little bit of planning as follows:
Cover the body
Arms and legs must be fully covered
There is no need to cover your feet. It’s acceptable to wear a pair of sandals.
Cover Up your hair with a head scarf.
You can remove your layers of clothing when you are in the privacy of your tent or hotel room. Many ladies wear the chador but it is not necessary to do that. It is recommended to get a long muntoe similar a coat down to knees when you are going to public.