Women to blame for earthquakes, says Iran cleric | World news | The Guardian
Obeying Islamic rules including Hijab or Islamic dress-code is necessary in Iran. However these rules are not observed very strict, especially for tourists and pussyhdpic. You must not worry about maintaining your hijabsince in times you have forgotten about it, the maximum penalty will be a request usually in a kind way to make it correct.
There are some minimum requirements for foreign women dress-code in public places but generally the law is loose when it comes to tourists. Iranian are hospitable people. There is no limitation in this respect and we recommend you make sure legs light colors in summer. Hair should be covered. It does not mean you shall have a tight scarf around your head.
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Don't worry, It is very usual that iran parts remain out of the cover. It's quite acceptable women women to allow whips of their hair to frame their face. Scarf is the most common covering for head and is called "Roosari" in Farsi. Should be covered with sextubetamilxxx clothes like man shirt, coat or manteau.