Thousands of social media users shared messages of support after her disappearance, dubbing her the "Girl of Enghelab Street" after the area in central Tehran where she staged the protest.
A hashtag about the movement, which can be translated to #GirlsofRevolutionStreet, was also trending on Iranian Twitter.
Breaking the rules can result in fines of up to 500,000 rials (£17) and up to two months in prison.
Iranian Islamic law has forced women to wear a hijab and long, loose clothing for modesty since the 1979 revolution. The announcement signaled an easing, as called for by the young and reform-minded Iranians who helped re-elect President Hassan Rouhani, a relative moderate, earlier this year.
Figures are rarely given, but Tehran's traffic police said in late 2015 they had dealt with 40,000 cases of bad hijab in cars, where women often let their headscarves drop around their necks.
"The campaign has gathered force and I believe the social media platform has given women the opportunity to speak out for themselves and show that they do not accept this degradation anymore".
The woman, reportedly a 31-year-old mother, broke the law by exposing her hair in public, risking arrest and fines.
"But as a woman who grew up in Iran I can tell you it's a big issue".
Now Iranians on social media praising the protesters claim "the girl from Enghelab Street" has proliferated, and photos testifying to a budding headache for Iranian authorities emerged one after the other on social media on January 29.
Since the 1979 revolution, Iran has required women to wear the Islamic headscarf in public.
Rights lawyer Sotoudeh said the protests were an indication that many women are fed up with the obligatory hijab and predicted they would continue.
Kelly Clarkson, Sam Smith and more music stars bring white roses to the Grammy Awards in support of the Time's Up movement. Though I can't say much about McCrary, Glover is proving to be one unbelievable artist.
The program now protects about 700,000 people, mostly Hispanic young adults, from deportation and provides them work permits. USA taxpayers will get stuck with the bill for a wall that neither party's leadership believes is necessary or feasible.
The Blues boss, whose side crashed out of the Carabao Cup at Arsenal this week, insists he does not fear the bullet himself. In this case it's more hard for the coach, because the players love to play and not have training sessions".
Such information was spread to mislead people, Kavi said. "I respect the ethos of non-violence propagated by Mahatma Gandhi". Bhansali's invitation on the condition that the film-makers make changes if anything "objectionable" was found in it.
Get Out writer and director Jordan Peele landed a Best Director nomination for one of the most talked about movies of the year . John Singleton was the first African American man to be nominated for Best Director , in 1992 for Boyz in the Hood .
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The eclipse will peak at 5:29 a.m., with the total eclipse ceasing at 6:07 a.m. and the partial eclipse ending at 7:11 a.m. Perhaps the most impressive (and visually noticeable) part of this lunar event is the fact that it's also a "blood" moon .
Among the injured people, there are three Dutch, a Turk and a French, two of the injured remain in serious condition. Prague mayor Adriana Krnacova, who was at the scene, expressed condolences for relatives of the victims.
And researchers say that this means salmon caught anywhere along the Pacific coast of the United States may have tapeworm. Banh said a young fellow strolled into the clinic whining of bleeding the runs and approaching to be tried for worms.
Mobile phone services suspended in Valley
Barricades were erected by the forces with pedestrian and vehicle movement only allowed after thorough frisking and questioning. Security forces have been deployed in strength at strategic locations in the city to prevent terrorists from moving around.
USA stocks open higher after earnings reports
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Dog almost died after owner dyed it purple
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Ranger Rover SV Coupe teaser previews super-luxe SUV
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Ed Sheeran Has Revealed That He's Engaged
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