The woman was later identified as 31-year-old Vida Movahed.
Women who appear in public without the obligatory hijab can face fines and prison sentences ranging from 10 days to two months.
Several other young women and at least one man have followed suit with similar protests.
M - A second woman has been arrested in Iran for protesting against the country's compulsory hijab rules after standing on a telecoms box on a Tehran street, taking off her headscarf and holding it aloft on a stick, The Guardian reports.
The young woman's resistance act coincided with the wave of protests that spread across the country in late December 2017. I am happy with my choice but I am opposed to forced hijab and that's why I appreciate the Girls of Enghelab Street.
Two women are known to have been arrested for carrying out this form of protest in the Iranian capital since December, the Daily Mail reported.
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"The girl from Enghelab Street is being multiplied while blowing a new spirit to the civil-rights struggle and civil disobedience of the Iranian people", dissident journalist and former Culture Ministry official Issa Saharkhiz said in a Twitter post that included an image from Isfahan. The protests in Tehran Monday were against the mandatory hijab laws that have been in place since the 1979 revolution that ushered in the current government.
"I don't think women can tolerate the pressure [over the hijab] for a long time", Sotoudeh, who has been jailed in Iran for her defense of human rights, told RFE/RL by telephone from Tehran.
Social media postings Monday showed at least five women in Iran protesting the obligatory Muslim headscarf by taking theirs off and waving them on sticks.
"These women are saying, 'It is enough - it is the 21st century and we want to be our true selves, '" the Iranian activist told the Thomson Reuters Foundation.
"Iran's ", an official arm of the state's police force that primarily focuses on women's dress codes, has intensified over the last few weeks.
The woman from the iconic protest image that activists have been imitating was reportedly freed on Monday after spending about a month in jail.