Ke$ha and Ashley Greene join the star-studded presenters list for the live show on September 12. By Jocelyn Vena Justin Bieber Photo: Mark Von Holden/ Getty Images One is a teen pop phenomenon known for inducing Beatles-level hysteria in his fans, the other, a free-spirit Atlanta MC whose debut album suddenly shot to pop success. Now, Justin Bieber and B.o.B are set to hit the stage as performers at this year’s 2010 MTV Video Music Awards . Bieber and B.o.B join already announced performers Kanye West , Drake and Florence and the Machine. Four-time nominee Ke$ha and “Twilight” star Ashley Greene will also be among the night’s presenters when the show goes live on September 12 from the Nokia Theatre in Los Angeles. The night will mark the first VMA performances for both Bieber (who presented at last year’s ceremony) and B.o.B. “I’m excited to be performing at the VMAs.
