I almost want to put taylor at number 1 because she broke out into a lot of international markets with her singles during the red era and 1989. But 21 and 25 are the biggest era's of the 10's so Adele wins
Adele>Taylor>Bey. Love them all. The biggest acts this decade so far.
Rihanna, Katy and Gaga are up there too. They just need to sell a great ammount of albums in their next eras.
I really think Katy and Rihanna should had been in this poll option. Rihanna is the 7th best selling artist and katy is the 13th this decade. Loud and teenage dream were huge eras