Adele
Christina Aguilera
Beyoncé
Miley Cyrus
Selena Gomez
Ariana Grande
Kesha
Lady Gaga
Demi Lovato
Katy Perry
P!nk
Rihanna
Britney Spears
Taylor Swift
Personally, I narrowed it down to Selena Gomez, Kesha, and Demi Lovato as they have the least amount of smash hits and the least amount of cultural impact. But I'm sorry, Demi, you are the...
I tried to find a balance between the artists with the largest fanbases on ATRL, and who have been on the charts regularly and recently (which explains the exclusion of Madonna, Avril Lavigne, Kelly Clarkson, and other artists with large fanbases here).
I disagree. The last albums of 4-5 of the girls in the poll were less successful than Artpop (her last mainstream album) or Cheek to Cheek, whichever way you want to spin it.