She had posted around 300 videos on her Instagram account to her some 43,000 followers, many of which showed her dancing.
Three other women who, like Hojabri, built a following on Instagram with their dance videos, have been taken into custody, according to the Asr-Iran news website.
Women in Iran are required by law to wear headscarves and modest clothing in public. She said, "It wasn't for attracting attention". She, alongside the others arrested, was seen crying on state television on Friday in what activists fear were forced confessions. Her performances had thousands of followers on various accounts with her name on them, ranging from 12,000 to 66,000 followers. Only one of the girls, 17-year-old gymnast Maedeh Hojabri, has been identified.
But before her detention, Hojabri, who is in her late teens, reportedly posted dozens of clips of herself dancing to Iranian pop music and Western tunes like DJ Snake's "Let me love you" and Sia's "Cheap Thrills". " I dance in a public park in Tehran to support Maedeh the 19-year-old girl who got arrested", wrote another supporter.
On July 8, Iran sentenced Shaparak Shajarizadeh, 42, to two years in prison and 18 years probation for peacefully protesting Iran's compulsory hijab law by removing her veil in public. I did not have any intention to encourage others doing the same...
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They also sought to hinder World Health Organization efforts to provide lifesaving medications to undeveloped countries. The measure was expected to be introduced by Ecuador.
"I'm dancing so that they [the authorities] see and know that they can not take away our happiness and hope by arresting teenagers and (girls like) Maedeh", said one supporter in a tweet translated by BBC. "I only do gymnastics", she continued.
A blogger, Hossein Ronaghi, told The Guardian, "People would laugh at you if you tell anyone in the world that [in Iran] they arrest 17-year-olds and 18-year-olds for dancing, being happy and being attractive, for spreading indecency, and instead paedophiles are free".
The teenager was one of many detained by authorities for posting videos on Instagram that were seen to be in violation of the Islamic republic's strict social codes.
It wasn't clear how many women had taken part in the protest, but reports in global media said dozens were risking arrest by uploading their own videos online. This is not the first incident when dancers in Iran have been jailed. Meanwhile in Iran, the cyber-police are continuing to take action against accounts similar to Hojabri's, censoring any unwanted content.
But many Iranians evade the filtering through the use of VPN software, which provides encrypted links directly to private networks overseas, and can allow a computer to behave as if it is based in another country. The reports said they were released on bail.