CelebrityTapProject

Rihanna is showing her diva side. The Bajan singer, who appears in a charity public service announcement for UNICEF, has caused a stir with the organization after filming her online advert. According to insiders, the red-haired songstress demanded that the organization re-edit the clip because she was "complaining that she looked heavier than usual...

Rihanna has partnered with UNICEF in support of the non-profit organization's Tap Project, which aims to educate consumers about the scarcity of clean drinking water for almost 900 billion people worldwide. The Tap Project was launched in New York City in 2007, and other celebrity participants in the current campaign include Dwight Howard, Taylor Swift, Adrian Grenier, Selena Gomez and Robin Willi