Justin Bieber and Selena Gomez to headline Pop-Con tomorrow

Justin Bieber and Selena Gomez are set to perform at Pop-Con at Nassau Coliseum in New York on Saturday. Although the two are set to perform separate sets, Gomez hasn't ruled out the possibility of taking the stage together to try out a duet or two."I'm excited. We would love to. We're trying to work it out," Gomez, who will be performing with her band The Scene, told MTV News. "We don't know yet