Both have released 2 albums this decade.
Avril Lavigne
Goodbye Lullaby sold 1.7m WW
Avril Lavigne sold 800k WW
Lead Singles:-
What The Hell 2m US #11. 5m WW
Here's to Never Growing Up 1.2m US #20 . 2m WW
Vevo Certified Videos:-
What The Hell
Smile
Wish You Were Here
Here's to Never Growing Up
Christina Aguilera
Bionic sold 850k WW .
Lotus sold 550k WW
Lead Singles:-
Not Myself Tonight 430k US #23. >1m WW
Your Body 500k US #34. >700k WW
Vevo Certified Vidoes:-
Your Body
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Which Gurl is Bigger?
Note:- We're talking about WW. Not just US.
Discuss and Vote.