List of the world's greatest pop star

Popdust.com have named their Top 40 Greatest Pop Stars in the world, and of course, our boy Justin Bieber is #1 on the countdown!

Checkout the full list!

1. Justin Bieber
2. Taylor Swift
3. Rihanna
4. Katy Perry
5. Kanye West
6. Adele
7. Drake
8. Lady Gaga
9. Nicki Minaj
10. Beyonce
11. Rick Ross
12. Lil Wayne
13. One Direction
14. Britney Spears
15. Usher
16. Chris Brown
17. Jay Z
18. Frank Ocean
19. Jennifer Lopez
20. Pit Bull
21. Carly Rae Jepsen
22. Adam Levine
23. Selena Gomez
24. Lmfao
25. Flo Rida
26. Kesha
27. Skrillex
28. The Wanted
29. Madonna
30. Kelly Clarkson
31. Calvin Harris
32. Ellie Goulding
33. Fun
34. Pink
35. Adam Lambert
36. Gotye
37. Miley Cyrus
38. Cher Lloyd
39. 2 Chainz
40. Big Bang