01. Highest Number of Twitter Followers: Lady Gaga
Sorry, Biebs – Gaga gotcha. Say what you will but the Queen of Pop Charts is also Numero Uno in Twitterverse with 26,823,122 followers (as of July 2012) to Justin Bieber's paltry 24,687,443. Rounding out the top 5 are Katy Perry (22,869,592), Rhianna (22,232,112), and Britney Spears (22,232,112). Number 6? President Barack Obama (17,381,203) who is the only other male in the Top Ten.