Question: when was traditional clothing outlawed by the leader of iran

title: History of the Islamic Republic of Iran
text: In April 2007 , the Tehran police began the most fierce crackdown on `` bad hijab '' in more than a decade . In the capital Tehran thousands of Iranian women were cautioned over their poor Islamic dress and several hundred arrested . In 2011 , an estimated 70,000 police in Tehran alone , patrolled for clothing and hair infractions . As of 2011 , men are barred from wearing necklaces , `` glamorous '' hairstyles , ponytails , and shorts . Neckties are forbidden in the holy city of Qom . After a leading cleric ( Hojatoleslam Gholamreza Hassani ) issued a fatwa against keeping dogs as pets , a crackdown on dog ownership commenced . 

Answer: answer: In April 2007, the Tehran police began the most fierce crackdown on ``bad hijab'' in more than a decade.  As of 2011, men are barred from wearing necklaces, ``glamorous'' hairstyles, ponytails, and shorts.