Instagram allows breastfeeding and post-op scars in new guidelines
Instagram has updated its community guidelines with more detail on what types of nudity it allows.
Images of "sexual intercourse, genitals, and close-ups of fully nude buttocks" are banned.
The company's community guidelines also state that "some photos of female nipples" are not allowed.
Instagram has faced criticism for removing topless photos of women in the past.
The updated guidelines state that photos of "post-mastectomy scarring and women actively breastfeeding" are permitted.
Nudity in photos of paintings and sculptures is also allowed.
Users who break the rules are warned that their accounts may be disabled.
"We want Instagram to continue to be an authentic and safe place for inspiration and expression," the company states.
Instagram's community guidelines have remained largely the same since the photo-sharing app was launched in 2010.
Although there is now more detail, the main rules have not changed.
Aside from nudity, users are reminded they may not break the law: "Offering sexual services, buying or selling illegal or prescription drugs (even if it's legal in your region), as well as promoting recreational drug use is also not allowed."
Some "hate speech" is allowed when it's being shared "to challenge it or to raise awareness."
Recently Instagram apologised for removing a photo of a woman's clothes and bed after her period.
Rupi Kaur, from Toronto, said she wanted to "demystify all the taboos that are around menstruation."
In 2014, the company defended its rules on nudity after being criticised for removing photos of topless women.
Scout Willis, the daughter of Bruce Willis and Demi Moore, protested against one of her photographs being taken down.