In seven years...
Rihanna has sold more singles in the USA than Madonna, Mariah Carey, Whitney Houston, Barbra Streisand, Cher, Celine Dion, and any other female artist has in their entire careers.
Celine Dion, Mariah Carey, Madonna, Alanis Morrisette, Shania Twain & Whitney Houston all have a single studio albums that have sold more copies than Rihanna's entire discography of albums.
Its amazing how different the music industry is.
Céline Dion - the greatest female vocalist of all-time
- still slaying the competition
some 32 years after she made her debut!