We've always liked the Real Slim Shady.
But while the 8 Mile star is the reigning king of Facebook, Gaga and Rihanna are Twitter royalty. Gaga rules the microblogging site with 27.8 million followers, narrowly beating out Justin Bieber and his 25.8 million Beliebers. With 23.4 million followers, Rihanna's doing pretty well on there too. Eminem, however, lags behind his fellow artists with only 11.8 million followers.
Time to step up that Twitter game, Em!