The person saying Rihanna sold more than Beyonce its only by 150,000 copies. And it only was counting their most recent albums (Good Girl Gone Bad & B'Day) altogether Beyonce has sold more than Rihanna. Rihanna has only sold 11 million albums with 3 albums while Beyonce sold 17 million with 2 albums. Those numbers i put above are only counting the albums and not singles or downloads and things like that just album.