Rihanna crowned queen of digital sales

R&B singer Rihanna has become the best-selling artist online of all time.

Nielsen SoundScan officials say the 'We Found Love' singer had sold more than $47.5 million worth of music by the end of 2011.

The Black Eyed Peas came in second, with $42.4 million in sales. Their 2009 hit 'I Gotta Feeling' racked up $7.6 million alone.

Eminem is slightly behind with $42.2 million, while Lady Gaga takes fourth place at $42 million. Taylor Swift rounded out the top five with $41.8 million in sales.

Katy Perry, Lil' Wayne, Beyonce, Kanye West and Britney Spears make up the rest of the top 10 best digital-selling artists.