As of September 2012, the accounts with the most followers belonged to the following individuals and organisations:
1.Lady Gaga (29.9 million followers worldwide)
2.Justin Bieber (28.5 million)
3.Katy Perry (27.2 million)
4.Rihanna (26.0 million)
5.Britney Spears (20.8 million)
6.Barack Obama (20.3 million) - highest ranked account representing a politician
7.Taylor Swift (19.1 million)
8.Shakira (18.2 million) - highest ranked account based outside the United States
9.YouTube (17.5 million) - highest account not representing an individual
10.Kim Kardashian (16.2 million)
Other selected accounts: 13. Cristiano Ronaldo (13.5 million) - highest account representing an athlete 58. FC Barcelona (6.9 million) - highest account representing a sports team.