Album Sales-
Avril Lavigne
Let Go: 17,000,000
Under My Skin: 10,000,000
Best Damn Thing: 6,000,000
Goodbye Lullaby: 1,300,000
Avril Lavigne: 650,000
Total: 34,950,000
Queen B
Dangerously In Love: 11,000,000
B'Day: 8,000,000
Sasha Fierce: 7,000,000
4: 3,000,000
Beyonce: 4,000,000
Total: 33,000,000
Don't forget to take into account their singles! I;m actually surprised by how close it is between them