*removes singles*
1. Madonna- 130M Albums
=
2. Mariah Carey- 70M Albums
+1
3. Britney Spears- 40M Albums
+1
4. Pink- 27.5M Albums
+2
5. Adele - 26.5M Albums
+5
6. Avril Lavigne- 23.4M Albums
+5
7. Rihanna- 20.5M Albums
-5
8. Lady Gaga- 19M Albums
-3
9. Christina Aguilera- 18.3M Albums
-1
10. Beyonce- 16.3M Albums
-3
11. Taylor Swift- 9.5M Albums
+1
12. Kelly Clarkson- 9M Albums
+1
13. Katy Perry- 8.2M Albums
-4
14. Miley Cyrus - 7M Albums
+1
15. Gwen Stefani- 6.2M Albums
+3
16. Selena Gomez- 2.5M Albums
+5
17. Sia- 1.6M Albums
-1
18. Demi Lovato- 1.6M Albums
+4
19. Ariana Grande- 1.5M Albums
-2
20. Kesha- 1.5M Albums
-6
21. Meghan Trainor- 1M Albums
-1
22. Iggy Azalea- 0.4 Albums
-3
Interesting.