Billboard's 'Greatest Pop Star' of the 21st Century countdown so far:

11. Usher
12. Eminem
13. Nicki Minaj
14. Justin Timberlake
15. Miley Cyrus
16. Jay-Z
17. Shakira
18. The Weeknd
19. BTS
20. Bruno Mars
21. Lil Wayne
22. One Direction
23. Bad Bunny
24. Ed Sheeran
25. Katy Perry