It's hard to believe that it's been almost seven years since Rihanna burst onto the pop scene. Since her debut in 2005 with "Pon de Replay," she's appeared on Billboard's Pop Songs chart a whopping 34 times.
That makes Ri-Ri the top pop artist from the past twenty years! The 34 chart appearances include 21 Top 10 singles and nine #1 hits. Fellow pop star and gal pal Katy Perry tied the "Umbrella" singer with nine chart toppers of her own.