Justin Bieber’s underwear exposed!

Can you believe the pop star with millions of fans has just show off his butt? See how Justin Bieber wears at the 2012 Wango Tango concert. He is wearing an extremely low sagging jean, blue jacket with a white t-shirt inside and his white underwear exposed. All the girls’ fans must have screamed a lot at the concert. Ohh wooaahhh, baby baby baby Ooooooooh…

Bieber is trying to keep his pant up all the time but it just can’t. (photo credit: Kevin Winter/Getty Images)