Justin Bieber Makes Scene at Wango Tango 2012 (watch!) 1Justin Bieber was one of a slew of entertainers who dropped in on 102.7 KIIS FM’s Wango Tango 2012 concert in Carson, Calif. last night. Nicki Minaj, B.o.B. and Pitbull also took the stage.

Ryan Seacrest hosted the event. He has a popular show on the Los Angeles station.

Justin also took the stage to introduce his Canadian protege Carly Rae Jepsen. Also performing were The Wanted, Foster The People, Big Sean, Maroon 5, Wiz Khalifa and Gym Class Heroes.

Other celebrities were also spotted in the crowd, including reality star sisters Kylie and Kendall Jenner, “American Idol’s” Colton Dixon, Maria Menounos and Derek Hough from ABC’s “Dancing with the Stars” and “Twilight” actress Nikki Reed, with hubby Paul McDonald.

Check out Justin’s interview and his introduction of Carly Rae.