All Of Your Tween Dreams Come True, Justin Bieber Joined Taylor Swift Onstage For “Baby” [VIDEO]

Get ready to hear screams. Call all the teenage girls in the area for this one. Justin Bieber jumped on stage with Taylor Swift in L.A. the other night and they did a duet of Justin's hit song "Baby." All I have to say is Justin, pull up your pants. No one looks good rockin' the sag, it just looks like you're wearing a saggy diaper. Get all the juicy tween love right here!

Don't forget to keep it KISS because we still have a stack of tickets to give away for Taylor's sold out show October 14th! Many more coming in the next few weeks, and a HUGE surprise is on the way too. You never know who might show up to one of her shows, right?