Katy Perry's "California Gurls" wasn't the only video to drop today -- rapper B.o.B and Paramore lead singer Hayley Williams' collaboration, "Airplanes," had its debut too!
Katy Perry's "California Gurls" wasn't the only video to drop today -- rapper B.o.B and Paramore lead singer Hayley Williams' collaboration, "Airplanes," had its debut too!
