Rihanna posting naked pictures on Instagram has become an industry standard, so we shouldn't be surprised by her bare butt pic.

The picture of Rihanna's cheeks was removed from her Instagram feed fairly quickly, but not before the Internet happened.  Her butt floss jean shorts were spread to every corner of the web, for all of us to enjoy.

Rihanna has been filming the video for 'Pour It Up', and she has been posting pics from the set including some stripper heels swimming in singles.

Instagram

For those of you thinking that Rihanna needs to clean up her act online . . . we agree, but just pipe down for a bit.  There's no reason to act so quickly.  Let's just wait and see what body part she posts next.