Rihanna is having a good day. Billboard has just named her the Top Pop Songs Artist of the past 20 years. Rihanna has only been in business since the mid 2000's, about 7 years, but she has managed to chart 34 songs on the weekly countdown since her debut with Pon De Replay. Within those 34 songs, 9 have hit number 1 and 21 were top 10 hits.The full list of artists are below.

Who is your favorite on this list?

Kelly

Billboard Top Pop Songs Artists 1992-2012 Top 20:

1. Rihanna
2. Pink
3. Britney Spears
4. Kelly Clarkson
5. Mariah Carey
6. Katy Perry
7. Usher
8. Black Eyed Peas
9. Janet Jackson
10. Madonna
11. Lady GaGa
12. Christina Aguilera
13. Justin Timberlake
14. Nickelback
15. Matchbox 20
16. Beyoncé
17. Backstreet Boys
18. Jennifer Lopez
19. Maroon 5
20. Avril Lavigne