Selena Gomez, Ne-Yo Introduces Bruno Mars, B.o.B, Paramore

The actress/singer-songwriter and the R&B artist call the all-stars to the stage to perform "Nothin' On You," "Airplanes," and "The Only Exception."

Selena Gomez, Ne-Yo Introduces Bruno Mars, B.o.B, Paramore

The actress/singer-songwriter and the R&B artist call the all-stars to the stage to perform "Nothin' On You," "Airplanes," and "The Only Exception."