This story has been updated.

Facebook and Instagram's censorship of women's bodies is extremely nebulous.

Model/blogger Simone Mariposa is the latest influencer to fire back at the social media giants after they deleted her viral photo for nudity — even though it contained no nudity. 

"Apparently, someone reported this picture and Instagram took it down without truly looking at the content of the picture," Mariposa wrote.

Mariposa told Revelist that the same photo was also deleted from Facebook, which owns Instagram.

Part of a body positive series by photographer Taylor Giavasis, Mariposa wears underwear and uses her arm to cover her nipples in the picture. 

"This is tastefully done and doesn't violate ANY of Instagram's terms and conditions," she wrote of her first-ever nude shoot. 

According to Instagram's community guidelines, nudity and "some photos of female nipples" are subject to deletion. But Mariposa's photo conflicts with neither of those rules. Facebook's guidelines on nudity are virtually identical to Instagram's. 

Mariposa posted other photos from the series to her accounts — but only the frontal shot was deleted.

"I read over [Instagram and Facebook's] guidelines and saw that my picture didn't go against any of them," the 23-year-old model told Revelist over email. "Judging by the very disrespectful and harsh comments from the first post on Instagram and Facebook, I deducted that it had been reported. I reposted them on both platforms and they haven't been taken down again, and it's been two days, which further supports my deduction." 

Mariposa confirms that both platforms cited nudity guidelines as the reason for the deletion.

Facebook and Instagram have a long history of questionable censorship.

This May, Facebook banned an ad featuring plus-size model Tess Holliday in a bra and underwear because it "[made] viewers feel bad about themselves." The ad was later reinstated and Facebook apologized. 

Shortly after that, Instagram deleted a perfectly innocent photo of three plus-size bloggers wearing bathing suits, taking several weeks to correct the mistake with little explanation as to why they deleted it in the first place. 

And just this month, after Facebook got tremendous criticism for deleting breast cancer awareness content, two of its vice presidents said they would soon begin allowing posts that are "newsworthy, significant, or important," even if they violate community standards.  

It's upsetting that Mariposa, who was nervous to strip down in the first place, but did so to promote confidence and self love, is having to fight to let these beautiful images be seen.

"When you’re plus-size and you have rolls and back fat and you’re a model or blogger as well, you do a lot of poses and things to camouflage that, but I didn’t have that protection of posing to hide that," she told SELF magazine about her first nude photos. "At first I was nervous, but after a while I was like, ‘There are people who look just like me and want to see a representation like this, so I might as well just go for it and not hold myself back.' ... I hope that they see that my intention is to show them that if I love myself enough, despite being unconventional or not what society considers beautiful, that they should love themselves, too."

When she reposted her image to Instagram, Mariposa added a message for anyone who might think to report it. Hopefully some folks at Facebook and Instagram will read her note as well.

UPDATE, 10/27, 1:04 pm: Instagram sent Revelist this statement. Mariposa says her deleted Instagram image has been reinstated. We asked a rep from Instagram about the Facebook photo that was deleted — and whether it, too, would be reinstated — and have not heard back. 

“We mistakenly removed the post and we apologize for the error. We worked to rectify the mistake as soon as we were notified and have already taken steps to prevent this from happening in the future.”