As Rihanna hosted her inaugural Diamond Ball in 2014, she pulled out all the stops to ensure that it would be a memorable affair. And the Grammy-winning
singer, 26, also wowed in the style department, as she stepped out in two stunning gowns for the glitzy charity gala, held at The Vineyard in Beverly Hills, California. After turning heads in an elegant rose off-shoulder Zac Posen dress with a dramatic train, she changed into a stunning black bouffant gown as
she took to the stage.