In the wake of Chris Brown and Rihanna’s relationship struggles and domestic violence allegations, talk show queens Oprah Winfrey and Tyra Banks are dedicating episodes focusing on the “Rihanna’s of the World.” Banks will host a show on teen dating abuse and will subsequently appear on “The Oprah Winfrey Show” to discuss how she was abused emotionally in a previous relationship, according to MSN.com.—QS