MTV.com News — Singer also fills in for an absent Ludacris by rapping the Atlanta MC's part.By Amy Wilkinson Justin Bieber performs at the Kids' Choice Awards on Saturday Photo: Kevin Winter/Getty Images Starry-eyed tweens and celebrities alike (we saw yo... more info

MTV.com News — 'They are the rock stars of the scene,' he says of the former.By Akshay Bhansali DJ Tiesto Photo: Denise Truscello/ WireImage This week, Tijs Verwest, known around the world as DJ Tiësto, will be headlining the Ultra Music Festival at the ... more info

MTV.com News — In new 'Diary' clips, Justin Bieber rehearses 'Eenie Meenie' with Sean Kingston and does vocal exercises lying on the floor.By Jocelyn Vena Justin Bieber Photo: MTV News & Docs While MTV News has been following Justin Bieber all around Manh... more info

MTV.com News — 'I listen to it over and over again,' one fan says.By Jocelyn Vena A Justin Bieber fan Photo: MTV News Justin Bieber's new album My World 2.0 hits stores on Tuesday — and fans have been flocking to iTunes and their local record stores to ... more info

Monsters and Critics — more info

MTV.com News — 'It's somewhere that you can have a blast,' singer says of summer jaunt.By Jocelyn Vena Justin Bieber Photo: MTV News Justin Bieber is set to hit the road this summer on what is bound to be one epic teenybopper tour. He kicks it off in Jun... more info

Idolator — Justin Bieber brought out a surprise guest during his New York City album release party—none other than his “Eenie Meenie” duet partner Sean Kingston. And if you thought the lyrics “Shorty is an eenie meenie miney moe lover” were pure ... more info

Perez Hilton — You can't escape Bieber Fever!! And now it's coming to you!! Pop sensation Justin Bieber has announced his first headlining, 40-city North American tour, with special guest Sean Kingston!! Holy shiz!! And he's performing at HUGE VENUES, too!! You ... more info

Pop Crunch — Canadian pop sensation Justin Bieber is headlining his first tour of North America, featuring “Beautiful Girls” crooner Sean Kingston. On Tuesday, Bieber announced dates for the first leg of the eagerly-anticipated tour. The “One Less Lonely ... more info

Pop Crunch — It’s been nearly three years since Sean Kingston debuted on the music scene with his Summer 2007 smash hit, “Beautiful Girls.” Now the Jamaican-American reggae/hip hop singer is back — and working with cute-as-a-button Canadian heartthrob Jus... more info