Music News TV Tune in this Sunday for Oprah’s no-holds-barred conversation with pop superstar Rihanna! Written by Shawn Marazine on August 16, 2012 Tune in this Sunday for Oprah’s no-holds-barred conversation with pop superstar Rihanna! (Sunday, August 19, at 9 PM on OWN) Related posts:'Bates Motel' preview'Bates Motel' preview'Bates Motel' preview