Robyn Rihanna Fenty (born February 20, 1988), known mononymously as Rihanna, is a Barbadian singer-songwriter, businesswoman, fashion designer, actress, and philanthropist. She was friends with Katy Perry, however, it appears that the two are no longer close.
Perry performed a cover of Rihanna's song "Only Girl (In the World)" as part of an acoustic medley on February 20, 2011 as part of the California Dreams Tour. She wished Rihanna a happy birthday after performing the song.
