150 Pop Stars' Real Names
STEFANI JOANNE ANGELINA GERMANOTTA (a.k.a. Lady Gaga)

In this week's Q&A: assessing the 'Born This Way' era, Miley Cyrus' career sales and what Rihanna's next single could be.

Ask Billboard is updated every week. As always, submit your questions about Billboard charts, sales and airplay, as well as general music musings, to askbb@billboard.com. Please include your first and last name, as well as your city, state and country, if outside the U.S.

THE BEST OF MILEY'S WORLD

Hi Gary,

I've been an avid fan of