Photos: Trey Songz, Rihanna, Nas & More Arrive @ The 2011 Billboard Music Awards

Trey Songz

 This year marks the return of the Billboard Music Awards which are taking place right now at the MGM Grand Garden Arena in Las Vegas, Nevada. The Awards are already airing on the east coast and will air on the west coast at 8pm on ABC. Check out the photos from the white carpet below.

Good to see Nas out

Rihanna

Check out more photos below: