Beliebers weep as Bieber 'retires'

LAS VEGAS, NV - JUNE 28:  Recording artist Justin Bieber performs during his Believe Tour at the MGM Grand Garden Arena on June 28, 2013 in Las Vegas, Nevada.  (Photo by Ethan Miller/Getty Images)
LAS VEGAS, NV - JUNE 28:  Recording artist Justin Bieber performs during his Believe Tour at the MGM Grand Garden Arena on June 28, 2013 in Las Vegas, Nevada.  (Photo by Ethan Miller/Getty Images)

    JUST WATCHED

    Beliebers weep as Bieber 'retires'

MUST WATCH

Justin Bieber announced his retirement on Twitter. But is this a publicity stunt or will Bieber bow out for good?