Teen pop star Justin Bieber's hordes of fans have followed him all the way to the top of Twitter's most popular posters.

According to the website TwitterCounter.com, Bieber is in charge of Twitter's most-followed account.

His 33.33 million followers put him ahead of longtime leader Lady Gaga.

Rounding out the top-five list are Katy Perry, Rihanna and U.S. President Barack Obama. Britney Spears, who Gaga edged out of top spot back in the summer of 2010 ranks sixth.

The 10 most followed Twitter accounts:

1. Justin Bieber (@justinbieber)

2. Lady Gaga (@ladygaga)

3. Katy Perry (@katyperry)

4. Rihanna (@rihanna)

5. Barack Obama (@BarackObama)

6. Britney Spears (@britneyspears)

7. Taylor Swift (@taylorswift13)

8. YouTube (@YouTube)

9. Shakira (@shakira)

10. Kim Kardashian (@KimKardashian)