Rihanna does not like bras. Her nipples like the Los Angeles sun. The confluence of these elements often brings Rihanna's nipples to full headlight and remarkably visible status when she struts about in the City of Angels, as she did yesterday in a tank top in West Hollywood.
Say whay you will about Rihanna, she knows how to get attention. And while we don't generally condone the concept of attention seeking, when a woman with a hot body uses her fine female form to get attention, who are we to complain? Keep on poking on, Rihanna. Enjoy.