Wango tango is an annual day-long concert produced by local Los Angeles radio station KIIS-FM. and bla bla bla if u want to know more u can click here !
And this year so special ! because KISS-FM Los Angeles has added a special guest host apperance by JUSTIN BIEBER and hosted bt RYAN SEACREST
Justin tweeted :
and Carly too..wait... lol
AND THIS IS THE PICTURE OF THEM ! (: