While Instagram may have strict guidelines for nudity, many stars still push the boundaries when posting to social media. Kim Kardashian shared a fully naked snap of her pregnant self in August, while Pamela Anderson posted a throwback of herself in the buff just this week. Chelsea Handler is well-known for her nipple-freeing posts, but other celebrities, like Miley Cyrus, choose to use strategic hand placement or Photoshop to make their skin-baring snaps a little less NSFW. Read on at your own risk; there's (obviously) nudity ahead.