Justin Bieber "Total Pro" at AMA Rehearsals, Despite Ongoing Selena Gomez Drama: Justin Bieber isn’t letting his… http://t.co/1YYIZxPk

Justin Bieber "Total Pro" at AMA Rehearsals, Despite Ongoing Selena Gomez Drama: Justin Bieber isn't letting his... http://t.co/1YYIZxPk