Lil Wayne (5)

That's right get them together! An accomplishment that actually impresses. 9! ...n btw Britney isn't the only with 2 diamond...Mariah actually is almost reaching 3 at 9million with Mariah Carey

Not all of her studio albums have sold 1m copies through soundscan, but her first 9 studio albums have:

1. Mariah Carey 4,918,276
2. Emotions 3,590,874
3. Music Box 7,243,446 (=15,752,596)
4. Daydream 7,620,642 (=23,373,238)
5. Butterfly 3,763,428
6. Rainbow 2,957,278 (30,093,944)
7. Charmbracelet 1,157,206
8. The Emancipation of Mimi 5,953,333
9. E=MC² 1,279,388
= 38,483,871 out of 55,000,000 albums sold through soundscan