A student has spoken out against her school after she was reprimanded for her underwear when she went to school bra-less.

High school senior Kaitlyn Juvik was called into the school office for an alleged dress code violation after she allegedly made others feel 'uncomfortable' by wearing an off-the-shoulder black T-shirt without a bra.

Following the incident at Helena High School, in Helena, Montana, students staged a protest wear girls went to school without a bra, according to MTN News.

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Outrage: Student Kaitlyn Juvik, from Helena, Montana, spoke out against her school after she was reprimanded for not wearing a bra under a black off-the-shoulder T-shirt, pictured

'Uncomfortable': Helena High School told Kaitlyn, pictured, either to put a bra on or to cover up because her appearance was making another person uneasy

Kaitlyn, who said she was not wearing a bra, claimed it was wrong of the school to address her about her underwear.

Speaking during the silent protest, in which she was joined by fellow female students who went to school bra-less, she said: 'What I was confronted about was wrong...

'As long as nothing is showing and you’re covered up, girls should not have to wear a bra,' she said in a video posted on KTVH.com 'The fact that I was told it makes people uncomfortable offended me because it’s my body,' she told MTN during a gathering outside the school. 'It is my natural body and I’m not sure why that is uncomfortable to somebody.'

She said the T-shirt she was wearing was 'not see-though, not inappropriate' and claimed that the observer would have to have been 'looking very hard' to see that she was not wearing a bra.

Courtesy of KTVH

Taking a stand: Kaitlyn staged a protest, pictured, with other female students who all went bra-less in solidarity

Defense: Kaitlyn posted a picture of the T-shirt she wore to school on Facebook, claiming it was 'not see-through, not inappropriate'

School principal Steve Thennis said the incident was not about the fact that she did not wear a bra but that it was because her clothing had made somebody else feel uncomfortable.

'I’m not going to check student’s undergarments,' he said. 'We are going to ask them to dress appropriately and if we feel it is inappropriate, male or female, we are going to ask them to cover up.'

He declined to comment further on the incident, telling Daily Mail Online that it had already been given 'more air time than it deserves'.

Posting a picture of the T-shirt she wore to school on Facebook, Kaitlyn wrote: 'If anyone is curious, this is the shirt I was wearing when I was called out!

'Not see-through, not inappropriate! And you definitely cannot tell I'm not wearing a bra unless you're looking very hard! I was most definitely not wearing anything that was against the dress code!'

Online fans: She has attracted support from hundreds online, such as Michael Wright, whose message is pictured, through the Facebook group No Bra No Problem

In agreement: She has received messages of support from across America, pictured, and the world

Hundreds of people have joined a Facebook page called No Bra, No Problem in solidarity with Kaitlyn, which has nearly 900 members and has attracted support from around the world.

Chantelle Marie Rollins, from Bangor, Maine, wrote: 'All the way from Maine. I absolutely LOVE this movement! Woman shouldn't have to be forced to wear a damn bra.

'If you are looking at a woman's breast hard enough to notice you aren't wearing a bra, maybe that person should be the one getting in trouble. Not you. You go girl! You're going viral! [sic]'

Also among supporters was Michael Wright, who wrote: 'No girl/women should have to wear a bra if they don't want to and no one should be able to tell you what you can and can't do for your comfort... we men are not told to wear underwear if we don't want to so why should you girls/women!'