Jason Derulo - Billboard Music Awards 2013

Jason Derulo shows off his buff arms as he arrives on the blue carpet at the 2013 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 19) in Las Vegas.

The 23-year-old singer presented an award during the telecast, alongside Emmy Rossum.

PHOTOS: Check out the latest pics of Jason Derulo

Earlier in the month, Jason and his girlfriend Jordin Sparks posed together at the 2013 KIIS FM Wango Tango held at The Home Depot Center in Carson, Calif.

10+ pics inside of Jason Derulo…