Luna Winters is on a mission: to challenge Facebook's nudity policy and question how we define gender in one go.
Winters, who identifies as a transgender woman, posted a topless photo of herself to Facebook along with her change of name document.
Facebook currently restricts "some images of female breasts if they include the nipple", but their community standards do not mention anything about transgender nipples.
In a message accompanying the image, Winters, who supports the #FreeTheNipple movement, asked Facebook: "Now as your rules specifically state 'female' and as I am a male, I ask you, where do you differentiate between one gender and the next?
"I've seen men on here with bigger tits than me and yet you do not sensor them. Clearly this is not only sexist but it discriminates against a sex entirely."
Upon review, the social networking site reportedly allowed the image to remain on Winters' profile.
However, she says when she shared the image again telling her friends the happy news that it had been accepted, the second, identical image was removed.
Speaking to i100, Winters said: "I think for me this shows that they aren’t thinking about how gender isn’t just two boxes that you tick. It’s a spectrum, and you should be allowed to express yourself how you want."
A spokesperson from Facebook told HuffPost UK Lifestyle they are currently investigating the issue around Luna Winters' photos.
They also highlighted that Facebook actively works to support members of the transgender community.
Last year, the site introduced 71 gender options for users to choose from.
Earlier this year, this option was expanded to include a custom box, allowing people to add up to ten separate gender terms and define the audience that sees each one.
Facebook's diversity page reads: "We recognise that some people face challenges sharing their true gender identity with others, and this setting gives people the ability to express themselves in an authentic way.”