What is the music kingdom for this generation?

Remember when Madonna was the queen of pop? Who do you think is now? And Britney was the princess and micheal jackson whas the king of pop. Who do you think fills those positions now? Also, you can have more than one singer on each status. I just wonder what other people think about this because we have so much artists now. Oh an remember the Backstreet boys and NSYNC? Lol