CLEAR CHANNEL Top 40 KIIS/LOS ANGELES has added a special guest host appearance by JUSTIN BIEBER to WANGO TANGO 2012, hosted by wakeup-meister RYAN SEACREST.

The annual event will feature special guest DJ CONNOR CRUISE with celebrity appearances by, FOX’s “American Idol” finalist COLTON DIXON; ABC’s “Dancing with the Stars” cast members including PETA MURGATROYD, CHERYL BURKE, DEREK HOUGH, ROSHON FEGAN, CHELSIE HIGHTOWER and MARK BALLAS; from MTV’s “Jersey Shore” DEENA CORTESE RONNIE ORTIZ-MAGRO; ABC FAMILY’s “Pretty Little Liars” JANEL PARRISH; CW’s “Vampire Diaries” KAT GRAHAM; NICKELODEON’s “Victorious” ARIANA GRANDE; MTV’s “Teen Wolf” COLTON HAYNES.

RYAN SEACREST will host the show along with the rest of the KIIS airstaff at THE HOME DEPOT CENTER on SATURDAY, MAY 12th. The Red Carpet begins at 2p, with the show kicking off at 3p.

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I’ve added HD captures from Teen Wolf season 2 trailer.

In celebration of reaching 100,000 followers on Twitter, Colton announced a little contest! Watch the video below:

The cast members of Teen Wolf talk about what to expect in season 2. Watch Youtube version here.

Non-American fans can watch the promo here.