This is what wiki offers. I know it's not 100% reliable, but almost every site agrees on the top 4 and Britney is not in it.
1) Madonna : +300 million records
2) Mariah : +200 million records
3) Céline : +200 million records
4) Whitney : +170 million records
5) Barbra : +140 million records
6) Britney : +100 million records
Britney's numbers should be around 110M now. But still not close to the top 4.
And don't get me started on Céline being left out of the list and ignored by almost everyone except one poster so far.
Britney has sold about 80 million albums. If you're talking records you can double that number at least
The first three in the poll.
I mean, what do you think of when you hear the word "pop"?
The queen of pop, the princess of pop, and the soon-to-be new queen of pop.