Instagram has updated its community guidelines, adding harsher language on nudity and discrimination and making clear what kind of nudity is and isn’t allowed.

The new guidelines ban posts featuring bare buttocks, genitals, intercourse and “some photos of female nipples”. They permit images of breastfeeding and mastectomy scarring.

While Instagram says that it realises that people might want to share nude images “that are artistic or creative in nature”, nudity will be banned on the site. “Nudity in photos of paintings and sculptures is OK, too,” the rules say.

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It will also move to ban some images that show nude or partially-nude children for safety reasons. “Even when this content is shared with good intentions, it could be used by others in unanticipated ways,” Instagram says, pointing to a special page that features advice for parents that use the site.

They also feature more clear language on harassment and abuse. In a section titled “don’t be rude”, the guidelines tell users that “it's never OK to encourage violence or attack anyone based on their race, ethnicity, national origin, sex, gender, gender identity, sexual orientation, religious affiliation, disabilities, or diseases”.

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The pair worked with each other on single "Can't Remember To Forget You". 5/21 Rihanna's most outrageous uncensored Instagram pictures A shower in front of the lens. 6/21 Rihanna's most outrageous uncensored Instagram pictures A spot of poledancing on the set of music video "Pour It Up". 7/21 Rihanna's most outrageous uncensored Instagram pictures The only way to sit on a throne in upside down with legs wide open, obviously. 8/21 Rihanna's most outrageous uncensored Instagram pictures Still on the set of "Pour It Up", she assumes an uncomfortable-looking position as she reclines on a chair. 9/21 Rihanna's most outrageous uncensored Instagram pictures You probably wouldn't want to show this picture to your boss or child, so it's surprising that this shot managed to slip through the Instagram net. 10/21 Rihanna's most outrageous uncensored Instagram pictures Here she sits on a surf board, legs straddling a paddle, mouth wide open, in a typical watersports pose. 11/21 Rihanna's most outrageous uncensored Instagram pictures We're not not sure what editorial value this has, but we're pretty sure it breaks Instagram's code. 12/21 Rihanna's most outrageous uncensored Instagram pictures Rowing her surf board with a dubious-looking cigarette. 13/21 Rihanna's most outrageous uncensored Instagram pictures Celebrating Christmas with another mysterious cigarette. 14/21 Rihanna's most outrageous uncensored Instagram pictures Here she is at carnival in Barbados showing off her jewels. 15/21 Rihanna's most outrageous uncensored Instagram pictures Unfortunately, her spread legs obscure her sparkling carnival briefs. 16/21 Rihanna's most outrageous uncensored Instagram pictures Perhaps she was just trying to ensure her neck managed to garner maximum sun exposure. 17/21 Rihanna's most outrageous uncensored Instagram pictures Smoking with notorious cannabis fan Snoop Dogg. 18/21 Rihanna's most outrageous uncensored Instagram pictures Posing sexily with a snake. 19/21 Rihanna's most outrageous uncensored Instagram pictures Just because this shot doesn't feature Rihanna's aesthetically pleasing face or body, it doesn't that mean this beachside shot doesn't clash with Instagram's "partial nudity" ban. 20/21 Rihanna's most outrageous uncensored Instagram pictures Eschewing sun loungers for a pool side recline. 21/21 Rihanna's most outrageous uncensored Instagram pictures This was captioned with "#legalizethis" and taken in Amsterdam.

They also write that Instagram “is not a place to support or praise terrorism, organized crime, or hate groups”. They ban other illegal activities like offering sexual services, selling drugs or promoting their use.

Instagram will also move to take down pictures glorifying self-harm, it writes. They will remove such pictures or disable the accounts of those posting them, as well as taking down content that identifies victims or survivors of self-harm.

As with Facebook’s guidelines, Instagram doesn’t say outright that it will ban violent videos.

“We understand that people often share this kind of content to condemn or raise awareness,” the guidelines say. “If you do share content for these reasons, we encourage you to caption your photo with a warning about graphic violence. Sharing graphic images for sadistic pleasure or to glorify violence is never allowed.”

While Instagram stressed that the policies themselves were not new, and that it had simply made the guidance more detailed, the new terms give much more detail on what exactly is banned and not.