Taylor Swift Tops Miley and Justin on Billboard’s ’21 Under 21′ List (PHOTOS)

Taylor Swift has just added another feather in her cap.

The 20-year-old Fearless singer has snagged the top position on Billboard magazine’s “21 Under 21″ list for 2010. Those on the list were “selected not only for their tender age but also for their potential to rule the pop culture zeitgeist over the next 12 months.”

Swift beat out some formidable competition to achieve the honor, including Miley Cyrus (who came in at Number 10), Nick Jonas (at Number 6), Justin Bieber (who came in just behind Swift ) and iCarly star Miranda Cosgrove (who landed the #14 slot).

Click through the photo gallery to see who else made the list—and make sure to let us know if you agree with the choices in the comments section.