Rihanna has been named the top pop artist of the past 20 years.  She has had 34 songs chart since her 2005 debut Pon De Replay, including 9 number ones and 21 top 10 hits.  Pink landed in second place, followed by: Britney Spears, Kelly Clarkson, Katy Perry, Beyonce, Lady GaGa and Chris Brown.  For the cherry on top of the sundae Rihanna has just overtaken Eminem to become the most like person on Facebook with just under 62 million fans.

Do you agree wtih Rihanna being the top pop artist of the past 20 years?