We're not surprised to see some underb00b pics pop up on Rihanna's Instagram. Is it for Chris Brown?
For more Hollywood news and gossip:
http://www.youtube.com/hollywoodbackstage
Subscribe at:
http://www.youtube.com/subscription_center?add_user=HollywoodBackstage
Like us on Facebook:
http://www.facebook.com/hollywoodbackstage
Follow us on Twitter:
https://twitter.com/#!/HollywoodBstage
