Justin Bieber: Through the Years In just a few short years, Justin Bieber has gone from Youtube hit to international teen pop sensation. His enormous success has even launched a new vernacular about his fans: "Beliebers" with "Bieber Fever." The star sat down with "Nightline's" Bill Weir to talk about his music and how he deals with the fame. Watch the full interview on "Nightline" TONIGHT (June 26) at 11:35 p.m. Donna Svennik/ABC