WTF! Katy Perry Super Bowl Halftime Show Illuminati Rumors! (Satanic Sym...

8. Katy Perry (143 million sales approx.)

One success after another, starting with "I Kissed a Girl" in 2008. Katy Perry is one of the leading figures of the pop world, capable of achieving incredible results: for example, the California singer holds the record (formerly of Michael Jackson) for the most consecutive weeks spent in the Billboard 100: between May 2010 and September 2011, she remained there for 69 weeks, placing five different singles on the charts.